Bubble is usually deranged, evil and fun, but when she is afraid of something, (e.g. Pencil telling Lightning to shock someone), she will try to avoid showing her fear or run away to hide and cry \.

When pushed enough, Bubble isn't afraid of speaking her mind and fighting other characters,
She cant control her anger at all so piss her off and your probably gonna end up with a black eye and a broken limb. she can be sweet to her lovers and is poly shes more snuggly and clingy to anyone she likes