Mutant Tracker: Caliban can use Charge. If he hits a character possessing the Brotherhood of Mutants or X-Men keyword or team ability with a close combat attack, after actions resolve you may remove an action token from
Caliban.

Errata

The keyword "Horsemen of the Apocalypse" is "Horsemen of Apocalypse".

If Caliban hits an opposing character with the right TAs and/or keywords, when exactly is the token removed? Can he avoid taking pushing damage by removing a token before placing (what would be a second) token for his current action?
Pushing damage is always applied as the action resolves. Since the token is not removed until after the action resolves, the pushing damage will have already occurred and removing the token will not prevent that. (10-12-11, normalview)

Edited to reflect current timing of game effects.