Tubby was born in Big City some time in the 1930s. As a child, he worked with his friends Tommy Rogers and Toughy as a member of the Blue Boys. Tubby later grew up and sired children. His son, Slats, along with the children of former Blue Boys Tommy Rogers and Toughy worked together to defeat Doctor Light. 
- Although this character was originally introduced during DC's Earth-Two era of publication, their existence following the events of the 1985–86 limited series Crisis on Infinite Earths remains intact. However, some elements of the character's Pre-Crisis history may have been altered or removed for Post-Crisis New Earth continuity, and no longer apply.
- 29 Appearances of Richard Mehlville (New Earth)
- 2 Images featuring Richard Mehlville (New Earth)
- Quotations by or about Richard Mehlville (New Earth)
- Character Gallery: Richard Mehlville (New Earth)