Comic world - Cosmic armor Superman known as Thought Robot was the only one capable of defeating Mandrakk in the beginning and to the end of DC, simply because that was why
The Thought Robot | Character Level Wiki | Fandom
Cosmic Armor Superman/Thought Robot/CAS is only ISLAND level confirmed - Gen. Discussion - Comic Vine
Is Cosmic Armour Superman really Superman? Or is he just a Thought Robot created by the Monitors? - Quora
Thought Robot runs the Endless gauntlet - Battles - Comic Vine
THOUGHT ROBOT SUPERMAN FEATS - YouTube
Cosmic armor superman | Wiki | Battle Arena Amino Amino
Superman's Story Is The Greatest Story (Part II) - ScienceFiction.com