So the Colossus only drop 3 weapons?

[Basil the Dragon]

So Zuulnerada (Catacomb 8 - 12) drop Axe, Spear, Bow and Claw which in total 4 weapons, while Kaluuz (Catacomb 12 - 18) drop Sword, Axe, Claw, Bow and Bell which is 5

But Colossus only drop 3? Axe, Katar and Bell? I am not sure if it does drop any other weapon but so far from my multiple runs, it only drop 3 different types. I'm not sure tho but it is kind of bummer. Would be nice if they got much more than that ahahaha