Well this leaves me wondering if the "troll" mechs are indeed the same as designed for MM, or if they are any different as the suggestions made to JJP via Pinside and his Google Groups forum many months ago during the initial design phase.
Those suggestions were things like having the ball trap under the head from behind for ball lock, having the head sense which direction it was hit from so that the U-Turn or orbit could be necessary to generate the hit that would dispatch the "troll", or having a multi-level target that raises up in two stages. From the head design, I would estimate that the last one is out, since it looks like a single level head design.
I'm unsure based on the design of the head and the dotted line outline of the under-field mech whether the mechanism is any different than the MM one. Can anyone tell? I wonder what that round circle is. Is that just the coil outline for the "troll" mech?
I really hope these things do more than just pop up and take normal straight on hits to dispatch... They are cool and all, but it would be very nice if the rules do something more interesting with them than was done before on MM.
-Jim (full disclosure Hobbit on order from day 1)