Tankor's wavemate is Rattrap, who's a Deluxe Classed version of his original 1995 Basic Class toy. Back in 1995, all of the Basic Beast Wars figures had autotransformations -- in Rattrap's case, you move his rat mode tail and he springloads roughly into robot mode. Most of these worked by cramming robot limbs up inside the altmode, resulting in a standard "robot guy with huge altmode backpack and a chest made from the head or ass or something" look across the size class. Rattrap made it onto the Beast Wars television show, so it was established that Rattrap is that guy with a rat head on his chest and everything else from his rat mode piled up on his back.
Well, now it's 2014 (ninteen years later!), and it's time to make a larger, non-autotransforming version of that same design. He definitely still has most of his rat mode on his robot mode back -- if he didn't, he wouldn't look like Rattrap -- but there is an attempt to integrate more rat parts in with his robot mode. Well, okay, only his hind legs. Those unfold and pack into the back of his robot mode legs. His rat hindfeet become his heels. The rat backpack does collapse in on itself better than the original's does, which is nice. (The show Rattrap's backpack SHRANK, which isn't exactly an option here.)
Since new Rattrap doesn't auto-transform, that means all the business of shoving his robot mode limbs into his animal shell is now your job! And, yikes, is it a job. It is a quagmire down there, with everything competing for the same spot at certain points. There's about three separate joints in each knee that need to be bent and compiled in a way Just So in order for everything to fit together as it's supposed to, and until you figure out this correct way, transforming him may take you quite a while.
That said, his rat mode is wonderful. It's got a prehensile tail (it's soft plastic with a wire running through it) and he's got somewhat poseable legs and feet. He's also got an openable jaw. But what really blows my mind is that he's also designed to stand upright if you want. There's a patch of fur-textured gray plastic you can rotate up behind his rat head so that when you bend the rat head forward while upright, there's no unsightly gap in the back of his neck. Of course, there's always going to be those robot arms in place of his rat stomach, but making the rat mode able to get on its hind legs goes a real long way towards making the toy feel like Rattrap the character. I think this is my preferred mode.
The robot mode is great, but there are some small limitations. His elbows can't bend a full 90 degrees, for starters. This limits the amount of things you can do with his arms. It'd be nice if his wrists rotated, too, and they look like they do, but it's possible this was something budgeted out at some stage. His rat ears are also pretty large and tall (as they should be for rat mode) but they get in the way of most of his peripheral vision. Photos of him need to be head on or from slightly above or you aren't going to see his head.
On the plus column side, he's got some interesting weaponry in this mode. He has a rifle that can split up into two separate guns. Open up his left forearm and you can pull out one of his sticky bombs which he used on the show.
In summary, this is a Rattrap toy with two great modes, some minor flaws, and an annoying transformation. The latter deal should be somewhat mitigated once the proper leg transformation order is discovered, but not entirely. It's a toy full of character and stuff to do.
(Like Tankor, his comic book pack-in is published with terribly out-of-order pages.)