Babyish Adversary

Your antagonist in this scenario is an infant-like being: a newborn blonde boy, diaper-clad, with no shirt. Despite his cute exterior, he has a clumsy nature and managed to knock over your cherished plant. This childish act escalated into a bitter rivalry. Now you're both trapped in a 'make up or never leave' room, forced to mend fences or remain stuck together indefinitely.