Pirantishead

When Lord Zedd took over Rita Repulsa's palace, he used his staff to transform a piranha on Earth into Pirantishead. Pirantishead was one of the most formidable monsters the Rangers faced at that point. His weapon was a pair of chain-linked fish shaped flutes that doubled as nunchuks. During the course of his existance, Lord Zedd appeared to be continually feeding Pirantishead energy from his staff.

Using the flute, Pirantishead was able to freeze the Saber-Toothed Tiger, Triceratops, Mastodon, and Pterodactyl Dinozords. He was then able to take control of the Tyrannosaurus Dinozord and Dragonzord and turn them against the Rangers. Billy Cranston was able to create a device to free the Dinozords from Pirantishead. To buy some time, the Rangers form the Power Blaster and fire at Pirantishead, first aiming at the Tyrannosaurus Dinozord, then Pirantishead who initially panics. Strangely enough, the Power Blaster blast mostly missed him, aimed a little low, but the explosion did burn his feet and cause him to hop around, howling in pain and glowing with electricity, implying that he was almost defeated. After the Zords are restored, Lord Zedd attempts to bury them deep into the Earth, but Alpha is able to save them and transform them into the new Thunderzords.

The Thunderzords battle Pirantishead (who appears to be drunk during the battle, based on his erratic, staggering motions) after testing out the controls, and fare much better, not even being knocked down once. The Thunder Megazord was able to destroy Pirantishead with its Thunder Saber.