It's the same weapon that comes with Devilrock, but for some reason in the Gobots meet the Rock Lords movie, he's carrying Brimestone's axe. Somehow they just couldn't get it right with Magmar's weapon.Unfortunately mine in the pictures is missing the weapon. Honestly I kind of like the weapon being a weird torch. Rock Lords are so absurd that one using a torch as a melee weapon is pretty satisfying.
It's worth noting that both the Rock Lords and Machine Robo version's weapon is black, while in Robo Machine and Machine Men it is a dark brown color. The toy itself is in the same colors in Rock Lords, Machine Men, and Robo Machine. In Machine Robo, however, the green is lighter and the orange is swapped out for purple. Machine Robo's eyes are a pinkish color, while the other versions are white. There is a pink eyed version of Magmar on Machine Men packaging, but so far that seems to not be a released version. I love these colors as it gives him a Frankenstein like appearance. Magmar/Devilrock is supposed to look scary and he pulls that off.
Magmar is a pretty nice toy around the size of your average Gobot. Like most Rock Lords, he's pretty chunky as the rock alt mode makes for a thicker robot mode. If you like chonky robots like I do, you'll find this pleasing. He's fairly articuated for a transforming toy of his time. Arms bend at the shoulders and elbows can bend inwards. Do to the transformation, legs can move at the hip, but only forward as though kicking. His knees are arlso articulated, but once again, only forward. Do to his top heavyness, you'd probably want to keep both legs down anyway or he'd fall over. Magmar's head does swivel up and down from transformation, so he can look down imposingly at smaller toys.