Overflow is the Omnitrix's DNA sample of a Cascan from the planet Cascareau.
Overflow retains his design from the Ben 10 Reboot. However, his color scheme has been changed from He also possesses four retractable crab legs from his back.
- Overflow retains his powers from the Ben 10 Reboot.
- Overflow has four rectactable crab legs from his back that act as extra limbs. They also extend further than his normal limbs.
- Overflow retains his weaknesses from the Ben 10 Reboot.
- Overflow first appeared in The More They Stay the Same when Ben attempted to help his past self fight a Techadon robot.
- The idea for the retractable legs was created by Sif. The inspiration for the idea comes from both the Iron Spider suit and Doctor Octopus, and the design of them is inspired by the Japanese spider crab.
- Overflow was the first Reboot alien to be designed for Time's End, as well as the first alien in general to be designed for it. He was also the first Reboot alien to appear in the series.