Hope you can help me here. Predator X has this nifty power:

TRACK: At the begining of the game, choose an opposing character. When Predator X is given a move action and ends his move adjacent to that character, that is a free action instead. That character receives -1 to break away rolls when adjacent to Predator X. If that character is KO'd, choose another opposing character.

What constitutes a move action? Do power actions that grant movement qualify? Could I use CHARGE or LEAP/CLIMB to activate the TRACK power?

Thanks

Yes, that is legal.

A "move action" is a specific type of action, just as a close combat is a specific type of action. It is NOT any old action with movement. Look for the phrase "give this character a move action" to see if something is a move action.

It is for Leap/Climb but not for Charge.