Catalyst

Catalyst Monsters
The Catalyst monsters are a series of Rock type monster cards that are based on catalyst's in science, speeding up reactions. They are played by Alex after episode 32 in "The Real Dimension" series.

Catalysts do not actually have a playing style. They have a mix between swarm and burn styles. They do not have many similarites between themselves. The lower levels are all WIND attributes, but this is only to support the summoning of the series signature Synchro monster; Internal Combustion Dragon. Apart from Catalyst Reactor and Catalyst Powerforce, they have quite high DEF.