heres an idea,
while casually destroying a village requested by raiders on the planet uhh, (not eggys planet, nooo!)
he was just using his clones as weapons, the usual, but one slip up made a mistake, while these, ¨unhatched bird people¨ were escaping through a very narrow multiverse portal, he tried to finish an egg... i mean round white guy off, the clone he launched ended up in the portal, teleporting into the SCP universe (idk anything about the scp stuff so you carry on from here)