The band members are : Alexi Laiho ( guitar and vocals ) , Roope Latvala ( guitar ) , Janne Wirman ( keyboard ) , Henkka SeppÃ lÃ ( bass ) , Jaska Raatikainen ( drums ) . Formed in 1993 , the group currently consists of Alexi Laiho ( vocals , lead guitar ) , Roope Latvala ( rhythm guitar ) , Janne Wirman ( keyboards ) , Henkka SeppÃ lÃ ( bass ) , and Jaska Raatikainen ( drums ) .