Swyy'm-Ee was a Rattatak gladiator of the Trogodile species who fought in the Cauldron, using a pair of fi'langs as weapons against other fighters, including Flalios. The assassin Asajj Ventress eventually defeated him.
Swyy'm-Ee's sole appearance was in the Star Wars: Clone Wars animated series, specifically in its sixth episode. Within that episode, his demise was shown twice within just a few short seconds. Initially, he was depicted being crushed by a section of the falling ceiling immediately after Anchor Blue. Then, only three seconds later, he met the very same end again, following Grunda Dolma.