Originally posted by Magnon
If we assume Joker just gets thrown into MU without his resources, connections or world knowledge then of course he would be in trouble.But allow him to have all of the above to the extent he has those in DCU then he would give Frank (and most other MU streets) the Jason Todd treatment.
He went undercover and was 'normal' enough that Batman of all people couldn't recognise him, even though they frequently interacted (over an entire year):
And Joker Venom isn't that hard for him to make: