It's made even worse when you consider that Crovax was such a major character in one of the earliest arcs the game's lore had to offer
Blue-Eyes Ultimate Dragon and Five-Headed Dragon are Fusion Monster cards, along with any other Monster cards that are coated in a purple shade around the card
It has protection from spells, traps, and monster effects
(I always imagine it like being what youd get if chess had certain edge cases where rooks could fly, bishops could teleport, or for a second, pawns were driving tanks.) Since the game is built around several thousand collectible cards, and almost every card has some additional unique ability to it one way or the other, it creates an endlessly manipulable, constantly surprising experience
Monsters, except The Winged Dragon of Ra cannot attack the turn they are Special Summoned