No involvement, King Mob is channeling him. Morrison claims that he did the same and Lennon gave him a song which he later played with a guitar in an interview with Gerard Way. Lot of the stuff in the Invisibles is based on Morrison's life (he even method acted the characters, dressed as a woman and went clubbing or something, for the Lord Fanny character).
If you are interested in these listen to the Morrison episodes of Kevin Smith' Fatman on Batman podcast or check Talking with gods (documentary, those made me want to read his books.