The team Star Wolf did not originate from fanon, and more information can be found on their respective wiki(s). You may read more about it on the following wiki(s):

Star Wolf is a mercenary group led by Wolf O'Donnell. Star Wolf is a highly villainous squad has amounted a large bounty across the Lylat System. They first appeared in Star Fox 64 as Andross's paid mercenaries to ambush and defeat Star Fox.

1st Squad

2nd Squad

Other Members