Heck yeah, Mighty Max! I miss Mattel and the goodies they came up with.
I had a bunch of those playsets. The zombie hand, a giant shark, a uh... wait, I can't really remember the others. Pretty sure there was a black flying saucer and a big mummy (as in, reanimated Ancient Egyptian-style mummified corpse), but one or more of them may have been off-brand or bootleg ones.
Actually pretty sure I still have most/all of those toys in storage somewhere.
Fun fact: the zombie hand one featured in a recurring dream (I hesitate to use the word "nightmare", since it was fairly tame compared to most of the scary dreams I had pretty much nightly at the time) I had several times as a kid. Basically it was just a shot of the hand itself, but much larger, more realistic and all the various critters and creeps lurking in it were real, alive and moving about in their gruesome surroundings.
Edit: after a bit of googling, I believe the mummy one was actually a giant snake temple-thing, which an undead Pharaoh lived(?) inside of.
Also I saw a giant spider and a brown cyborg skull with pointy ears that I remember having, too. I had at least one dream involving a giant spider around that time, but I doubt it was inspired by the toy. Spiders seemed pretty dang scary in those days.
...Oh, more familiar faces! I also had Lava Beast, Pharaoh Phang and Cybot. The absurdly-named Battle Conqueror looks rather familiar, too.
Yes, I've wound up on some weird site that reviews old toys, complete with their actual names, haha. How much deeper is this rabbit hole gonna take me?