If you you’re a fan of funk, you may have heard of The Grease Traps. Originally formed as an instrumental group nearly a decade ago by guitarist Kevin O’Dea and keyboardist/trombonist Aaron Julin, the local group added a trumpet player and tenor saxophonist in 2010, as well as a dynamic frontman — a vocalist and dancer extraordinaire who goes by the name “The Gata.” The Gata is, to put it plainly, wildly entertaining. At the Traps’ recent show at The Night Light, he was fully decked out in a polyester outfit and huge Afro, and he leapt across the stage with relentless, infectious energy. The band’s classic sound, meanwhile, was impeccably tight and hard-driving. This Saturday at the Legionnaire Saloon (2272 Telegraph Ave., Oakland), the Traps will perform covers of rare funk and soul tunes in addition to their own music, and will be joined by another local funk group, Gene Washington & The Ironsides, to help celebrate the venue’s one-year anniversary.