Looks like one of your villains stole the L from Mr. Harmless' name.
This is obviously a trap set up by the JLI. Any villain would have taken the R away to say Mr. Completely Hamless Man. The Brotherhood of Elitists will not fall for such schemes!

You bandersnatch! I'll wager you've been collaborating with Sweater Vest Man again! What have you done with theundeadhero?
Oh, he is near. So very near! After all these years you can trust that no one knows him better than I.