Yes she is
Yes, Poison Ivy is a confirmed Character. She will definitly be in the game. Just go to Google and type in LEGO Batman then click wikipedia then scroll down she is going to be in the confirmed characters.
Poison Ivy
You have to complete the third mission in the first villain epsode.
To make her more appealing to the kids watching.
Ivy kisses Batman in episode "Pretty Poison", from Batman:The Animated Series.
No, she's a DC character, specifically a villain from Batman's rogues' gallery.
Heroes: Batman, Robin, Nightwing, Batgirl Villians: the Riddler, Clayface, Dr. Freeze, Poison Ivy, Twoface, all henchmen, the Joker, the Penguin, and Catwoman.
No, Catwoman does, though.
Poison Ivy.
Uma Thurman
Poison Ivy is Dr. Lillian Isley. She is an enemy of Batman. Her lips are poisonous and she is immune to all poisons. Her best friend is Harley Quinn.
Batman, in some cases Superman (Batman Hush).