Trencher is a centipede-themed monster as seen in the Lost Galaxy episode, The Chameliac Warrior. His name is fanmade, as the character was never given an official name, due to only being seen briefly.
In a archival video reviewed by Chameliac in Trakeena's Scorpion Stinger, the Yellow Ranger was seen attacking this monster, before both fell off a building into a woodland area. When the monster had attacked the Terra Venture is unknown.