Avengers: Age Of Ultron - 32 Easter Eggs, In-Jokes And References
11. VERONICA
As the LEGO tie-in line spoiled a while back, Iron Man uses a mobile prison to try and capture Hulk when he's enraged by Scarlet Witch's powers. It doesn't last, but Stark and Banner reveal in conversation that they always had a contingency plan - code-named Veronica - to deal with any time he lost control.
There are two theories as to who the containment programme was named after: one could be that it's the "opposite" of Betty (in terms of the Archie comics at least), referencing Banner's suspiciously absent long-term love-interest.
The second theory relates to Tony Stark on the same lines, and obscure Stark Industries employee Veronica Benning. She was a physical therapist who he inevitably became romantically linked to when she was helping him regain the use of his hand. In the film, of course, VERONICA literally rebuilds the Hulkbuster's hand.