Here's a mummy from the Mega Blocks toy line that is a suitable Undead Giant for 54mm. Aside from the mummy, there's a winged vampire, demon, ghoul, Frankenstein's monster and a werewolf. Here's a side-by-side shot for size comparison. After disposing of his enemy, the giant mummy looks around for his next opponent... ... And engages in a deadly wrestling match with the giant scorpion! That stinger looks nasty!