Wolfbane

He was sent to ambush the Rangers during a divide and conquer tactic. When it looked like Wolfbane had the Rangers beaten, he and the Cogs were teleported away in order for King Mondo to figure out what was heading for Earth. Later, as the Rangers had split up again to track down the UFO, they were attacked again by Wolfbane and the Cogs. Suddenly, Gold Ranger appeared for the very first time and was able to take out the Cogs and Wolfbane. Wolfbane became big and fought the Zeo Megazord and then the Red Battlezord. Wolfbane had more than enough power to knock the Rangers out of their zords. The Gold Ranger then exterminated Wolfbane with Pyramidas.