When it Mega Evolves, Mega Scovillain manifests a third yellow head, which emerges by absorbing intelligence from the green head and aggressiveness from the red one. More powerful than the others, the yellow head almost takes control of the body. When all three attack together, they release an aroma so spicy that it can cause respiratory obstruction. When the Mega Evolution fades, the original heads regain their balance.
by ExpertRing8686