History of character is unknown.
- Evolution Process: Evolvo Lad has the unusual ability to accelerate or reverse the evolution of his body, becoming either an ape-like primate or a super-intelligent man. In his standard form he is human, but he prefers to remain in the big-headed evolved form most of the time.
In Big headed form:
In Cro-Magnon form:
- 17 Appearances of Sev Tcheru (Pre-Zero Hour)
- 4 Images featuring Sev Tcheru (Pre-Zero Hour)
- Quotations by or about Sev Tcheru (Pre-Zero Hour)
- Character Gallery: Sev Tcheru (Pre-Zero Hour)