Cha-Cha is the partner in crime of Hazel. He is a highly dangerous hitman who works for a time-travel organization to eliminate people who "mess with the timeline". He has a love for sugar, specifically donuts. He frequently complains about "Corporate" and the diminishing benefits of each job. When doing a job, he is seen wearing a blue and yellow bear mask with enormous eyes and a long toothy grin.
He is shown to have incredible strength and stamina, as well as having a high level of physical durability. He gets a lot of information out of witnesses by commanding that they "Elaborate." In the Netflix series (under the name "Hazel"), he frequently toys with the idea of leaving behind the hitman life, proclaiming when watching HGTV that there's "beauty in the mundane." He has a crush on Agnes, the waitress at the donut place he frequents (Griddy's Donuts).
- In the Netflix adaptation, the characters of Cha-Cha and Hazel are switched. Symbolically this is shown by the reversal of their masks; in the show, the blue bear mask belongs to Hazel and the pink dog belongs to Cha-Cha.
- In the Netflix adaptation, Cha-Cha is a woman.