Question: Who was the name of the bassist featured on  the American rock band Weezers most successful studio album?
Sentence (from "Weezer discography"): The discography of Weezer, an American rock band, consists of 10 studio albums, two compilation albums, one video album, six extended plays, twenty-eight singles and twenty-four music videos. Weezer's self-titled debut studio album, often referred to as "The Blue Album", was released in May 1994 through DGC Records.
Relevant evidence: Yes