20 or more. I hate the idea of a teenage girl with just standard martial arts training from her father being able to fight crime on the streets of Gotham without being murdered, it really undermines the Bruce Wayne character if suddenly a teenage girl that doesn't have half his resources or physical training can do his job. Ah and same with Robin. If they're gonna introduce Robin, he should be 15 by the time Bruce meets him but not become Robin until 3 years later of intense physical training by Batman and he should not be able to fight on his own without getting severely injured if Batman isn't around. Also, I guess it depends but I wouldn't mind if if they just scraped the romance altogether and have her be older than Dick. It's worked for other versions, it can work for this one, and she was older than him by 5 or 6 years in the comics.