Super Smash Bros. Fighters – Star Fox series – 03 Wolf 

Debut

In the Star Fox series

Intended Debut: Star Fox 2 (was to be released in 1996 before getting scrapped, was finally given an official release in 2017)
Proper Debut: Star Fox 64 (1997)

In the Super Smash Bros. series: Super Smash Bros. Brawl (2008)

Boxing Ring Title: The Silver Space Wolf

Theme Song: Star Wolf’s Theme/Sector Z

Wolf O'Donnel is a primary antagonist of the Star Fox series. He leads a band of mercenaries called Team Star Wolf. 

Wolf was intended to make his debut in the game "Star Fox 2" for the SNES before it was cancelled. The game would finally see a release in 2017, though. In this game, Wolf and his team - consisting of the inscrutable chameleon Leon Powalski, the arrogant pig Pigma Dengar, and the devious primate Algy - were hired by Andross to defeat Star Fox so Andross could conquer the galaxy unopposed. Wolf, who held a particular grudge against Star Fox, was eager to agree. Wolf stays behind to protect Andross's base Astropolis, while the other three members fly off in their Wolfen spaceships to three other planets to guard them from Star Fox.

As Wolf's teammates go down one by one, Wolf would personally confront Star Fox once they approach Astropolis. Compared to the rest of his team, Wolf's ship is stronger in both firepower and defenses, making him a tough opponent. Despite that, Star Fox would emerge victorious in their battle against him. While's Wolf's team would have their Wolfen's explode on them upon their defeat, Wolf decides to retreat before his explodes, though he swears revenge as he flies off.

Left: original 64 version. Right: 3DS remake.

Star Wolf would make it's proper debut in the reboot "Star Fox 64". While some elements from their intended debut in Star Fox 2 were kept, others were changed, such as Wolf losing the scar on his right eye and gaining an eye patch on his left eye, as well as replacing Algy with Andross's nephew Andrew.

Not much is known about Wolf's past, but what is known is that he has formed Team Star Wolf with Leon Powalski at some point, and that he may have some rivalry with Fox's father, James McCloud, who was the leader of the original Star Fox Team. Following Pigma betraying Star Fox to assist Andross, Pigma was enrolled into Star Wolf as one of their members. After that, Andross hired them to help him achieve his goals of galactic conquest, with Andrew tagging along as their fourth member to keep an eye on Star Wolf.

During the game, Team Star Wolf is encountered in three locations during the adventure: Fichina, Bolse, and Venom II. In each encounter, Wolf always prioritizes taking down Fox. (aka the player) On Fichina, Star Fox is sent to secure a Cornerian base from Andross's forces, but after a while Star Wolf learns of what's happening and arrive to put a stop to Star Fox's efforts. If Star Fox defeats them, Star Wolf ends up retreating and the Cornerian base is saved. If Star Fox fails to defeat Star Wolf in time, the bomb hidden inside the Cornerian base blows up, and any surviving members of Star Wolf will taunt the heroes before leaving.

At Bolse - the second-to-last level on the path to the bad ending - Star Wolf will only show up if the player is either unsuccessful at defeating Star Wolf at Fichina or if they haven't visited Fichina during their current playthrough. As Bolse is the last line of defense before Venom, Wolf and his gang are sent to stop Star Fox from destroying the satellite. Once Bolse's core is exposed, Star Wolf arrives to stop Star Fox. Defeating them isn't required to win the level, but doing so will make it easier to focus on attacking Bolse's core.

At Venom II - the final level on the path to the good ending - Star Wolf ambushes Star Fox when they unexpectedly arrive on the planet. In addition to now flying in their new and improved Wolfen IIs, Star Wolf notably take on a different appearance, with Wolf having a couple of bandages on him while the others have robotic equipment on them. Despite their new upgrades, Star Fox manages to take them down once more, allowing Fox to head off to confront Andross. During this, the four presumably escaped to fight another day.

At some point in the nine years following Andross's defeat, Wolf would kick Pigma out of the team due to Pigma's greedy and backstabbing nature, which made him a very unreliable ally. Andrew would stick around for a bit longer, but it wouldn't be long before Wolf kicked him out as well due to Andrew constantly bragging about himself despite being a poor pilot. At some point, Panther would obtain a new ally named Panther Caroso, who proved himself to be more reliable, humble, and trustworthy.

After skipping out on "Star Fox Adventures", Star Wolf would finally return in "Star Fox Assault". Here, it's revealed that Wolf had set up a new base of operations at Sargasso Hideout, an illegal criminal hangout where various scum of the galaxy come to work. Star Fox was trying to find Pigma Dengar, who had stolen an Aparoid memory core from them, and thought they'd find him there. Wolf was out with his team on a mission, and upon returning, he engaged Star Fox in battle due to them invading his turf. Once Wolf and his team are beaten, Wolf reveals to Star Fox that he kicked Pigma out of his team years ago, and that he wasn't welcome in Sargasso Hideout. Panther, who took a liking to Star Fox teammate Krystal, ended up telling Star Fox about Pigma whereabouts.

Later on, when the Aparoids began to invade Corneria City, Wolf and his team showed up to help Fox save the city, as well as rescue General Pepper who's slowly getting assimilated by an Aparoid. When all's said and done, Wolf gives Fox some friendly advice before he and his team take off. Not much later, Star Wolf returns to help protect Orbital Gate from an Aparoid missile attack

Star Wolf then stealthily follows Star Fox to the Aparoid Homeworld. After Peppy uses the Great Fox spaceship to jam it into the planet's defense mechanism to allow Star Fox to enter the planet's core, Star Wolf rushes in and reveal themselves to the group, wanting to help rid the galaxy of the Aparoids as well. During the trip, the group run into a massive army of Aparoids. After a while of trying to deal with them, Wolf decides that his team will hold off and distract the Aparoid army while Fox and his team head off to confront the Aparoid Queen.

Following the defeat of the Aparoid Queen and the entire Aparoid race, Wolf and his team aren't seen in the ending, but Fox suspects that they managed to survive the ordeal.

Fox's hunch would be proven correct in "Star Fox Command". Following the Aparoid invasion, Wolf and his team went back to dealing in shifty businesses. This ended up catching the attention of the Cornerian Army, who placed huge bounties on their heads. The group go into hiding and begin to brainstorm ways to get rid of their bounty. Upon learning that the Anglar Empire is declaring war on the entire Lylat System, Wolf figures that if they stop the Anglar Emperor, they'll be declared heroes and pardoned for their crimes.

The game has various outcomes, depending on the path the player chooses. In the ending "The Anglar Emperor" - which players will be forced to get on their first playthrough - Star Wolf considers recruiting the ex-Star Fox member Krystal to the team, as well as head off to Venom to personally defeat the Anglar Emperor, only for Star Fox to end up doing those two things. Despite that, Falco promises that Star Fox will see to removing their bounty. Sometime later, the former Star Fox member Krystal runs off to join Star Wolf - and more specifically get together with Wolf's team member Panther - due to Fox's indecisiveness and uncertainty about their relationship.

In the ending "Star Wolf Returns", Wolf and his team manage to trick Star Fox, allowing them to take down the Anglar Emperor themselves and get praised as heroes, thus the bounty on their heads are removed! However, their new recruit, Krystal, is viewed with scorn, as many people see her as nothing but a traitor to Star Fox for helping out Star Wolf. While she tries to ignore the various rude comments thrown at her, she eventually leaves the Star Wolf team to strike out on her own.

In the ending "The Curse of Pigma", Star Wolf, with help from Krystal, manage to defeat the Anglar Emperor without tricking Star Fox. Thanks to their efforts, all four of them are praised as heroes. With Fox seeing how Wolf took everything from him, he fell into a deep depression until he and Falco decided to retire from piloting and take up racing at the G-Zero Grand Prix.

The Star Fox series would then receive another reboot in "Star Fox Zero". It follows the same plot beats as "Star Fox 64", though the scenarios are a bit different.

Star Wolf first shows up at Sector β, where Star Fox fights against Leon, Andrew, and Pigma. Wolf shows up once two of the members have fallen. If the player is too slow to stop Star Wolf, Wolf will shoot Peppy to Titania and taunt Star Fox. If the player manages to defeat Star Wolf, Wolf flees elsewhere while expressing disbelief at his loss. Afterwards, Wolf and his team can then be encountered on the optional planet Fichina. At the final planet of Venom, Star Wolf decides to gang up on Fox as a last ditch effort to stop him. Despite their efforts, they end up getting beaten, and presumably retreat as Fox heads off to confront Andross.

Personality-wise, Wolf's first appearance in "Star Fox 64" portrayed him as a calm individual with a hint of politeness, but in later games Wolf became characterized as bitter and ruthless. Regardless, he's also shown to be quite cunning and merciless in his pursuits. Despite his villainous persona, he does hold morals, as he eventually kicked Pigma out of the team due to his greed and unreliability, as well as Andrew due to his braggart personality and his lack of piloting skills. In the "Star Fox 64" timeline, Wolf and his team slowly go from villains to anti-heroes to potentially full-blown heroes, though they appear to remain as villains in both the original "Star Fox" timeline and "Star Fox Zero" timeline.

In Super Smash Bros., Wolf has some similar moves to Fox and Falco, but he has his own twist on them. Show the competition that they may be good, but you’re better!

Special Moves 

Neutral Special: Blaster

Wolf pulls out his gun and fires a laser beam. While Wolf can't rapid-fire it, his blaster does have a blade on it, so whenever he pulls it out to fire it, anyone in front of him will take extra damage from the blaster's blade.

Inspired by the laser gun Star Fox wields in the multiplayer mode of “Star Fox 64”. The name for it, Blaster, was not used until “Star Fox Adventures”. Wolf’s Blaster is unique to Super Smash Bros., and hasn’t been seen in the Star Fox series. 

Side Special: Wolf Flash

Wolf stands still for half-a-second before boosting forward at incredible speeds at an upward 30 degree angle!

If Wolf hits the opponent at any point besides the very end, the damage and knockback it deals isn’t very strong. If Wolf hits the opponent at the very end of the move, the opponent will take massive damage and will either get flung away if they're somewhat far from Wolf, or get sent flying downwards if they're very close to Wolf.

This move is original to Super Smash Bros., though it may be  somewhat inspired by Team Star Fox's Arwing's capability of flying at high speeds when using a warp in "Star Fox 64".   

Up Special: Fire Wolf

Wolf stalls for a sec before flinging himself forward, dragging anyone with him before dealing a powerful kick with his other leg to send his opponents away. Despite what the name would suggest, fire isn't involved in the move at all, though it does “fire” Wolf off in whatever direction you’re holding; the default being straight upwards if nothing is held.

This move is original to Super Smash Bros. 

Down Special: Reflector

Wolf brings out his reflector, which surrounds him an elliptical “cat’s eye” looking energy shield. Any projectile tossed his way gets reflected back at the offender! Additionally, when you activate the move near a foe, the reflector will do some damage to the foe and fling them away.

This move is original to Super Smash Bros., though it may be inspired by how Team Star Fox's Arwings can deflect enemy fire by doing a Barrel Roll. 

Final Smash: Team Star Wolf

Wolf shouts “Wolf Pack!” as a targeting reticle appears in front of him. Three Wolfens – assumingly being flown by Leon, Andrew, and Pigma – fly towards it. Anyone that gets hit by the Wolfens gets flung into space, where Wolf, now in his own Wolfen, joins up with the others. Wolf then leads the charge while shouting “Grahaha! The hunt is on, boys!” as they blast away at the helpless foe(s).

If the Wolfens happen to hit Fox and/or Falco, then Wolf will shout “I’ve got you now, Star Fox!” instead.

Inspired by the main gameplay style in most of the Star Fox games, first introduced in "Star Fox" for the SNES. In those games, the player, who’s controlling Fox, flies the Arwing around various planets. They can also use the Arwing’s laser beams to fire at any obstacles and enemies that get in the way.

Additional Notes 

On the Lylat Cruise stage, Wolf can perform a special “Smash Taunt” by quickly tapping the “Down Taunt” button. Upon activating it, Wolf will enter a crouch-like pose, during which he must not get attacked for a few seconds or else the it'll get cancelled.
After a few second pass, Wolf will rise up and strike a pose, signaling the Smash Taunt was a success! Wolf’s teammates – Leon and Panther – will then start commenting on the battle or the stage, or even something unrelated to what’s happening. Some members of Team Star Fox will chime in during the Lylat Cruise “Smash Taunts” as well.
Wolf can only perform a Smash Taunt once per battle, and only if Fox, Falco, or another Wolf haven't done one.

If Fox is in a match and Wolf manages to become the winner, Wolf has a chance of saying “Playtime’s over, Star Fox!” instead of his usual victory quote.