I love this little model fighting mech with its rocket fist

It's "B-Riot" from the video game "Cyberbots: Full Metal Madness." About five inches tall, and very easy to assemble (no glue needed). In addition to being extremely articulated, there are a few assembly options (closed or open small fist, rocket fist on the right or left side). Currently 40% off.

Here's a mini-doc about the game: