Alvin's Species is a sapient alien race from planet Malamaroo. Despite being friendly, at least some members of this species seem to have a habit of leaving things unfinished.
- The Wubbulous World of Dr. Seuss, s01e6, "The Simplifier" (1996)
- The Wubbulous World of Dr. Seuss, s01e20, "The Grinch Meets His Max/Halfway Home to Malamaroo" (1997)
- Alvin is performed by puppeteer John Kennedy.