system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Jack Nicholson's Joker was deformed by chemicals. Heath Ledger's wore makeup. Which is the case for Leto's Joker? Romero's?
gpt
Leto's jumped into Ace Chemical's vat at LEAST once, as we've seen. That could account for his pallor and possible toxic brain chemistry.

Romero's was all makeup, as we saw with the painted mustache. He's a harlequin from the vaudeville era.