Tré Cool is in Green Day.
John Kiffmeyer ( born July 11 , 1969 ) , known professionally in music as Al Sobrante , is an American musician , best known as the former drummer for the punk rock band Green Day . Tré Cool . He replaced the band 's former drummer , John Kiffmeyer , in 1990 as Kiffmeyer felt that he should spend more time towards college .