This was actually part of a challenge, to draw Squirrel Girl hypnotized. Since I really like Squirrel Girl, and I really like hypno-scenes, it was a challenge I couldn't resist.
I really didn't want to do the scene that everyone else does, with Dr Doom finally getting his revenge on her... in fact, I didn't want a big, bad villain with a god complex to best her at all, cause that wouldn't be FUN. Instead, I went to her own comic, Unbeatable Squirrel Girl, for inspiration, and found the perfect candidate for someone who could hypnotize her: Ratatoskr.
If you don't know Ratatoskr, she was (is) one of the antagonists of The Unbeatable Squirrel Girl, and is a somewhat liberal interpretation of the squirrel from Norse mythology. The Marvel version has a hypnotic voice that can make anyone turn into a violent jerk... but here, she uses the voice to produce OTHER emotions...
ETA: Forgot to mention, but the one who challenged me to do this was Black--Wave . You can see the picture he drew beforehand here.