Here we have Sunbutter Cookies, an example of knowledge overpowered by sheer lunacy. One of the more stranger fusions on our list, Sunbutter is a mare of dominantly one mindset. That mindset is of the former party pony Pinkie Pie. Sunbutter’s recessive side of Sunset Shimmer exists cornered in the back of her mind, attempting to restore balance but cannot fully as a result of the impossible tyrant of parties. Only once every so often being able to take the reins of control out of Pinkies hands for small amounts of time before being tired out. As a result you get a mare whom behaves similarly, and acts similarly to Pinkie in most respects for most of the time. Though once in a while she does act in a calm timid manner the likes of Sunset when the component unicorn maintains influence for a bit. She has some physical traits of the former Sunset, and magic to do whatever she desires as well atop her reality breaking feats.
 
Her unique makeup creates a vast contrast to other mares like Zap-Apple Jam, whom despite her own contrasts plays to her strengths and is a very productive synchronized mare that works well with herself despite her contrasts. Sunbutter on the other hand just isn’t able to do such. As much as the framing was built to have both Pinkie and Sunset share influence, the pink mare as the Impossibility she is practically runs unopposed by her other half. Sunset unable to do anything to restrain or manage the other half of them. Chaos rains supreme in her makeup. Only until she and Zap-Apple fused into Motherly Morning was there enough mares to constrain and restrict pinkie from further control.
 
Until then, this unstable fusion spends her time mostly baking in private and raving on about ridiculous things while every so often calming down and appearing timid and quiet in an attempt to relax. Such is Sunbutter Cookies.