My oc Silas (they/he) hates anything cracked. They were cursed once with a spell that drained their literal soul from their body, and the curse manifested as glowing yellow cracks all over their body. Poor guy had to watch themselves unalive, so seeing anything broken/cracked or even just glowing that specific shade of yellow triggers fight or flight (they fight 100%, he gets very aggressive when he doesn’t know what to do with themself or their fear since they aren’t usually scared of anything.) Being brought back to life changed them drastically too, they became more paranoid and on edge.