While I know that Darth Starkiller is non-canon, I really like the TFU Dark Side ending and Lord Starkiller himself, in which Galen Marek, instead of saving Kota, finishes Vader off, then tries to kill Sidious. Sidious, however, cripples Marek, and cybernetically reconstructs him, making him his pawn until the Dark Lord had no further use for him and would kill him.

That said... respect Darth Starkiller, the murderer of the legendary Darth Vader, Lord Sidious' fourth apprentice!

Physical Capabilities

DURABILITY/ENDURANCE/PAIN TOLERANCE

Emerges unscathed after a close range thermal detonator explosion.

Is unharmed after a pretty big fall.

Tanks being Force Pushed pretty hard into solid ice.

STRENGTH

Staggers Ben Kenobi.

Throws Ben Kenobi around.

Overpowers ESB Luke's grip on his lightsaber, forcing the hilt against his head, and then throws him around like a ragdoll.

Floors Luke with one of his strikes, then kicks him back.

Grabs Luke, and once again throws him like a ragdoll.

SPEED

Dodges a thermal detonator.

Casually dodges two of Luke's strikes, that were fast enough to create a continuous afterglow of the lightsaber.

Lightsaber Skill

DUELING

Defeats Ben Kenobi. Although Ben survived the stab, he was crippled and then ragdolled.

Casually deflects an Enraged Luke's assault, then cuts his hand off.

LIGHTSABER THROW

Destroys a snowspeeder with saber throw.

RANGED WEAPON DEFLECTION/REDIRECTION

Deflects a Fallen Luke's variant of Force Lightning, and redirects it at Skywalker, blasting the Jedi back.

Force Powers

Opens a gigantic blast door.

FORCE GRIP

Force Grips Boba Fett and hurls him aside before Fett can get a shot.

Force Grips Ben Kenobi twice. In the second time, Kenobi was hurled so hard against the Falcon he was utterly atomized.

Holds the Millennium Falcon in place.

FORCE PULL

Force Pulls ESB Luke to him, completely ripping throughthe Jedi's Force Shield.

There. The feats for Darth Starkiller, evil Galen Marek from TFU's alternate ending. Although he is definitely not rich in terms of feats, his feats are good, especially against Ben Kenobi, a notable foe.

Nice.