Allegiance: Predacon
Function: Undercover Attack
Alt Mode: Crab (I think it's a fiddler crab)
Height: 3cm Length: 10cm Width: 10-15cm (depend on the poses of the claws)
It's a pretty good crab mode. His rear set of legs are a little big, being the robot legs, but then they're poseable allowing him to lean back or lift his head (the other legs are stuck in place). His claws are fully poseable, and his jaw moves. It moonlights as his robot head but you get the distinct impression the jaw movement was deliberate all the same. Right claw is a lot bigger than the left (which I suspect means he's meant to be a fiddler crab - but any crustacean experts out there feel free to LMK how close I am). On the underside he even has the folded-up tail of a real crab, which is also a nice touch. You don't have to play with this mode much to see that they really thought it out.
Fold that "tail" piece up (so it sticks out the back of the crab mode), straighten out the robot legs and open the feet. Lift the sides of the shell up (they swing) and fold his crab legs back. Position his arms and pull his head up and you're done.
Height: 10cm Width: 11cm
The right hand (the larger claw) has a little lever on the back which opens the claw to reveal large spines (you can manually open the claw and the spines stay hidden). The left claw opens to reveal a gun. I personally like TFs which don't have any vital parts you can lose - so this is a big plus for me - both weapons are attached. The shell halves become wings, and look qiute cool without getting in the way of the arms.
In this mode the green comes into it's own. Green chest, upper arms, thighs & feet offset by red & silver wings, red abdomen, head, claws, knees and calves. Orange only really comes into it on his head, claws and his six pack on his abdomen. Silver gun, green spines, yellow eyes & grey mouthparts (which do look like a crab's mouthparts).