Rattrap (Transformers) - Beast Wars

Rattrap is an infiltrator, sharpshooter, saboteur and demolitions expert. An unflinching pessimist, he is famous for delivering the line “We're all gonna die!.” when things look grim for the Maximals. In the episode “Dark Voyage” he mentioned offhand that he used to be an energon miner. It is humorously suggested in the episode "Transmutate" that he is a distant relative of Autobot Arcee ("What in the name of my great-aunt Arcee is going on here?!"). Although never seen in the television series, a toy of him from the 2006 Botcon says he turned into a Cybertronian Motorcycle before being reformatted as a rat. From what is known of his past life on Cybertron, he was a gambler, a womanizer and spent his free time at bars, referenced in his comment to Silverbolt concerning a place in which the servant bots walk around "minus their torso plates" ("The Agenda" Part 1). Rattrap is the most eager of the Maximals to return home.

Second to Rhinox, Rattrap has some knowledge about mechanics, especially sabotage and demolition/explosives, managing to create an effective countermeasure to Tarantulas's shield around a Vok ship in one episode (Other Visits Part 2). Rattrap often criticizes Cheetor's immaturity and stupidity and at times defies Optimus Primal when he feels Optimus's ideas are unreasonable, too risky or stupid. Rattrap also expresses frequent suspicions of Dinobot's loyalty throughout his time as a Maximal. For his part, Dinobot never liked Rattrap either, often referring to him as "vermin". Though the two often bicker, their relationship evolves over time and they become friendly rivals right up until the time of Dinobot's betrayal in "Maximal, No More". Although Rattrap never quite trusts him after Dinobot's brief return to his original Predacon allegiance, it is Rattrap who is shown to be the most affected by Dinobot's bravery and passing as Dinobot lay dying in Code of Hero. After Dinobot's death, Rattrap is often partnered with the fuzor Silverbolt. The consummate wisecracker, he is constantly giving his comrades nicknames, both derogatory and friendly. Despite his tendency to give his comrades nicknames, Rattrap is, in fact, capable of being leader, in Primal's absence takes the mantle of leadership, albeit reluctantly in Chain of Command.

In the original English version of the show, Rattrap speaks with a Brooklyn accent. In the episode "Code of Hero" Rattrap is seen in his original state during Dinobot's funeral, even though he had already become a transmetal, most likely a goof on the show's animators. His gun is called a fusion pistol (later "fusion riffle").

The television series depicts Transmetal Rattrap as having his backpack in robot mode rotating 180 degrees so that his rear wheels are at his shoulder level, but the toy does not do this, leaving his rear wheels alongside his hips. The show also depicts the wheels as removable, so they can be used as shields, but on the toy they cannot be removed.

Rattrap was one of only three characters (along with Cheetor and Waspinator) to survive from the beginning of Beast Wars to the end of Beast Machines (Although Optimus Primal, Megatron, Tarantulas and Rhinox returned to life in the comic storylines after Beast Machines).

Rattrap's voice actor; Scott McNeil, attended Botcon 2006 at the Lexington Convention Center for the 10th anniversary of the TV series.