The marker question is a good one, unless it's just the Megazords that need markers.

Well I figure if Jin has a marker, Enter must have one as well.

I smell an evil Ranger in the making.

I'm thinking Escape may be a new form of Enter. We never did get word on avatars changing shape and form so it's possible this could happen.

7/14/12: As it turns out Escape and Enter are two different characters. Whoops.

Woopsie, my topic got neglected for awhile. Anyway, I guess episode 30 answered the questions of what Enter and Escape where. Though more questions come from how they still existing with Messiah out of the picture for the moment.