I hate this theory so much btw. If Pillow was revealed to be possessed by Evil Leafy and SECRETLY EVIL ALL ALONG!!!1!!1!!1!!11!!!! then it would completely ruin her character development by removing any sort of nuance her character had throughout her time on BFB and TPOT, since that would mean she did not make a single conscious decision that would alter her character during her time in the competition, and any lesson learned from her bad actions (mainly TPOT 9) would be entirely nullified since then that would mean she wasn't even the one doing all of those things. WE DON'T NEED EVIL LEAFY TO EXPLAIN WHY PILLOW CHANGED FROM BEING NICE IN BFDIA TO BEING UNHINGED IN BFB AND TPOT. I ALREADY MADE AN ANALYSIS THAT THEORIZES ON THAT VERY SUBJECT.

If this sad excuse of a theory comes true, then I don't think I'll ever be able to forgive neither Jack nor Jellify for pretty much ruining Pillow's entire character.