How some decks include Fusion monster- GB Gyzarus if they dont run Gladiators?

Question

its really weird and sometimes i see people put Sanwitch in their fusion deck even though witch of the black forest is forbidden.

Answer 1

I don't know why anybody would put Gyzarus in their Fusion deck when they are not even running Gladiators other then to be retarded.

Sanwitch, however, is mainly used for E-Hero Prisma.  You activate Prisma's effect, choose Sanwitch, then discard Sangan to the graveyard.  This way it is easier to get to the field with cards like Limit Reverse or Monster Reborn.

Answer 2

becasue of prisma ( aka )

brain control

and it's fun to have a jank fusion deck

Answer 3

Bluff. People see the Gyzarus, think "oh, i'm going to be playing a GB" deck, and could perhaps alter their playstyle, which could give you an advantage. And as others said, people can take Prisma, and use its effect. So Sanwitch gets Sangan,