The clone had been present during Tony and Bruce's work on the Mind Stone for three days, the two having managed to assemble an artificial intelligence by analyzing the innerworkings of the stone, with Tony intending to use the AI for a program he'd been workshopping dubbed 'Ultron.' The two, with Naruto's supervision, did their best to map out Ultron's self-awareness but found little success. They had shelved it for the day when the Shadow Clone had popped.