Overflow's voice has a slightly muffled echo, and the sound of water-bubbles popping is heard whenever he appears on-screen.Despite that, Duncan has confirmed these aliens also exist in the Classic Timeline.
In Bomzobo Lives, Overflow pranked the Clerk.In Safari Sa'Bad, Overflow escaped the boat and battled robot panthers.Later, Overflow partially appeared when Dr. In Animorphosis, Overflow went Enhanced offscreen.In The 11th Alien: Part 2, Overflow briefly appeared before going Enhanced.In Omni-Tricked: Part 4, Overflow battled Vilgax thrice.In Omni-Tricked: Part 3, Overflow was sleeping off-screen, tried to put out a fire, and battled Vilgax.In Omni-Tricked: Part 2, Overflow battled Tetrax, SixSix and Kraab.In All Wet, Overflow nearly defeated Frightwig, but is stopped by Gwen and some park guards.In Bentuition: Overflow 02, Overflow made Grandpa Max to slide of the slides made by Diamondhead.In Bentuition: Overflow 01, Overflow tried to show off his skills, but gotten hit by the Orca Whale instead.In Brief Career of Lucky Girl, Overflow battled Hex.In Need for Speed, Overflow saved LaGrange.
In Ben 24hrs, Overflow was sleepwalking and nearly destroyed an amusement park.In The Ring Leader, Overflow defeated Iron Kyle.In Clown College, Overflow spoiled a prank.Overflow first appeared in Waterfilter, where he battled the Hydromanders twice.Overflow can accidentally cause a flood in confined spaces if he releases too much water. Overflow can be harmed by magic, as shown when he was incapacitated by one of Hex's spells. If Overflow shoots water at an electric device, he can be shocked while shooting, since water conducts electricity.