what else did he do apart from singing?
Comedy and acting
Maynard James Keenan
Keenan is featured in several segments of "Mr. Show", most notably in the Ronnie Dobbs sketch presented in the first season in which he plays the lead singer of the then-fictitious band "Puscifer". 
what is tool? American rock band when did this band form? 1990 who are the members of this band? Danny Carey, Adam Jones and Maynard James Keenan what kind of music is associated with this band? Rock who is the lead singer of this band? Maynard James Keenan where is he from? Ravenna, Ohio did he belong to any other band before joining the former one? Yes, TexA.N.S.
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Maynard James Keenan [SEP] Comedy and acting
Keenan is featured in several segments of "Mr. Show", most notably in the Ronnie Dobbs sketch presented in the first season in which he plays the lead singer of the then-fictitious band "Puscifer". He also appears in episode 2.6, "The Velveteen Touch of a Dandy Fop". Later, Keenan sang on a track for the "Mr. Show" incarnation "Run Ronnie Run", and appears in the "music video sex scene" on its DVD. Keenan appeared on the cover of the May/June 1999 issue of "Pop Smear" magazine, portraying Charles Manson as part of a photo essay, imitating a famous "Life" magazine portrait.