(Doom Patrol I #116) - Mutants Ar, Ir and Ur were threatening to destroy Earth by using their energy beams to bring Halley's Comet straight towards Earth, and Chief summoned the DP to stop them. He split up his team to find them, and Mento had a hunch they'd be in the Himalayas, since they needed a mountaintop for their plan to work. He was accompanied by Beast Boy, who groused about freezing over Mento's hunch, and Mento threatened to give him his first fat lip as his adoptive father. They didn't find the mutants, but they disturbed the Abominable Snowman, who went after them with a warclub. Beast Boy calmed him down, and made friends with him by giving him an Alfred E. Neumann button, which he claimed was a mirror. The rest of the team defeated the mutants, and they returned to hq to celebrate.

(Doom Patrol I #117) - Mento and Rita were awakened by a call from DP hq in the middle of the night. Rita had to leave, because an argument with the Chief threatened to dissolve the team, and Mento just wished they would break up so he could spend time with his wife and not be bothered.

(52 / WWIII Part One: A Call to Arms #1) - <Week 50, Day 1> Black Adam declared war on humanity after the death of his family, starting WWIII. Mento and the Doom Patrol were in Italy preparing for his imminent attack.

(52 / WWIII Part Two: The Valiant #1) - <Week 50, Day 4> The Doom Patrol confronted Black Adam in Pisa, but were unable to stop his rampage and thoroughly defeated.

(Tales of the Sinestro Corps: Superman-Prime #1) - An army of Earth’s heroes, including Mento and the Doom Patrol appeared to take Superboy down during the Sinestro Corps invasion of Earth. The heroes focused on wrecking his armor, because after a year on Oa, and away from a yellow sun his Kryptonian body still wasn’t at full strength, and his armor collected sunlight. Superboy bragged that once the sun rose on Earth he’d be at full power. Superboy was battered by Wonder Girl and Wonder Woman, who blamed him for Superboy’s death, as well as Supergirl and Power Girl, who blamed him for the death of the Superman of Earth-2. As the fight went against him, Superboy broke down in tears. He tried to wipe them away, saying that it was impossible foir boys to cry, and then whining that no one ever thanked him for sacrificing his Earth to save the multiverse. The battle lasted until dawn, and he flew into the sunrise. As he achieved full power he declared himself the one, true Superman. The Guardians arrived with Sodam Yat, the new Ion, and pitted him against Superboy-Prime.

(Doom Patrol V #3) - Chief reformed the Doom Patrol, operating out of, and working for the newly sovereign nation of Oolong Island. Chief was planning a way to neutralize a sentient black hole the DP were dealing with in Germany that had possessed a village, and summoned Mento, demanding he possess Elasti-Girl and use his mental powers to disable the possessed humans. Mento lamely tried to deny his ability to perform such a feat, but Chief surprised him by letting him know he was fully aware that he possessed Rita in her sleep to satisfy himself. He was terrified because Rita would know he was manipulating her if she was conscious, but Chief bullied him until he complied. Chief also made Mento remove his helmet, telling him he only wore it to gain trust because he was trying to convince people he couldn't use his creepy mental powers without it. Mento, inside Ritas mind, sent out a psionic blast that rendered all but one of the black hole's hosts unconscious. The black hole agreed to return with the DP to Oolong Island to talk to the Chief, as their conflict was now a stalemate. Rita seethed over how she'd just been used.

(Doom Patrol V#13, 14) - Elasti-Girl finally confronted Mento, and told him that although she’d wanted to kill him, she’d cooled down and now just wanted him to promise never to mentally control her again. He apologized, saying he was seeking help from the DP chaplain Father Rocky, but she said perversion and a need to manipulate weren’t illnesses, and all she just wanted of him was his word. He subtly tried to mentally influence her, and she freaked out, growing to giant size and threatening to crush him. Elasti-Girl flung Mento into the sea, and Robotman broke his fall so he wouldn’t die. He made it clear he wanted him dead as bad as Rita did for what he did to her, but he knew Rita would be guilt-stricken if she became a murderer.