Of late, DC Comics has depicted Poison Ivy as vegetarian or vegan across comic books, graphic novels, cartoons and TV shows She doesn't push it on others, but that's her thing She lets others make their own choices Here are a bunch (hat tip to some extraordinary research from More Bedside Books)
[...]
Vegetarian Archives
Back when the Batcave acquired a new member, Damian Wayne, Robin, son of Batman, made a pledge.
Something he kept up with, in subsequent appearances.
Both with Alfred…
And with Superboy…
But in Teen Titans Special #1 an awful lot is made of his regular (when he can) visits to a restaurant to revisit a childhood favourite, ox blood soup, also[...]