- 104. New Friend, Old Enemy
- 105. I Think His Name is Baxter Stockman
- 109. The Gauntlet (no lines)
- 113. I, Monster (no lines)
- 121. Karai's Vendetta (no lines)
- 126. Showdown, Part 2 (no lines)
- 204. Mutagen Man Unleashed
- 208. The Good, the Bad, and Casey Jones (no lines)
Total appearances: 8.
- Despite having a job at TCRI, he has been seen hanging around at Roosevelt High School in Mutagen Man Unleashed and The Good, the Bad, and Casey Jones. Since he's clearly not a teenager, it's unknown what he's doing there.