Defoliator

Defoliator (voiced by Richard Epcar) was a heat-manipulating robot scorpion monster who made the weather scorching hot in Angel Grove by destroying plants to produce a greenhouse effect. He was seemingly destroyed by the Zeo Megazord; however he only reduced to normal size. While the weather did cool down after the Zeo Megazord's victory; Defoliator started a new attack on Angel Grove and the Rangers. Zordon pointed out that the Rangers couldn't risk Defoliator growing, so Billy powered up the Zeo Blaster and Defoliator was gone for good.