It's OOC for Mr. Banner, but not for Mr. Hulk, who's on the pic, so I support pulling.
That said, it's not a picture you can have without a lampshade of some sort, I believe. Something along the lines of, "Wait, she actually spoke
Actually speaking (or more than laconically) is a decently common version of the trope. Shiina from Angel Beats!
, Teller from Penn & Teller
, Zazie from Mahou Sensei Negima!
, several others I won't mention due to spoilers. Losing your cool or actually becoming serious are others.