B = blank cube
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Gargantuan Leviathan = gargantuanvoid
Gargantuan Juvenile = gargantuanjuvenile
Gargantuan Baby = gargantuanbaby
Unknown Fish = AquariumGuppy
Ghost leviathan skeleton B = GhostLeviathanSkeleton 
Alpha Peeper = AlphaPeeper (add a number 1-5 for different variants example: spawn alphapeeper3)