Mott-A jock lion named "Mott"?When I first saw his name,the only Motts I could think of were Mott's apple sauce and the rock band Mott the Hoople.According to the AC Wiki,Mott's name is a reference to the band.Mott the Hoople broke up in 1977 and changed it's name to British Lions,so there's the lion connection.
Pashmina-Pashmina is a type of wool that comes from Cashmere goats.
Pierce-His name is a reference to Alan Alda's character from the tv show M*A*S*H*,Benjamin Franklin"Hawkeye"Pierce.Pierce's original catchphrase is "hawkeye".
Quillson-I've read that his name is a reference to the Wilson brothers from the 60's band The Beach Boys.For those young'uns that have never heard of The Beach Boys,they put surf music on the map with tunes like Surfer Girl,Surfin' Safari and the song that has a Quillson connection,Surfin U.S.A.There's a lyric in Surfin' U.S.A. that mentions a "bushy,bushy blonde hairdo",like Quillson's and Quillson happens to have a surfboard along with some music gear in his house.