Second to only Andross, Star Wolf is one of the greatest enemies of Fox McCloud in the Star Fox games. Despite a small cameo in Melee, he made a full appearance in Super Smash Bros. Brawl.
And he was yet again another clone character. Now this wouldn't be so bad if he replaced Falco from Melee. But he didn't, he was the first clone character to be the third version in the series.
Granted he was a good bit different than Fox or Falco, but totally unneeded. I rarely used him at all.
And his Final Smash was just another landmaster tank like Fox and Falco. I don't even think he used one in the games.