Bucky Barnes: » Sing, Sing, Sing by Benny Goodman. » And how » Steve Rogers definitely. He would also have subjected Sam to it by now. And anyone else interested in swing. » Absolutely not. Since his hippocampus has been stripped, he's particularly vulnerable to this shit.
Baymax: » Immortals by Fall Out Boy (blame Hiro) » Not particularly. He's not only well rounded and has little trauma, he has a digital brain » People may have heard him humming it in the clinic? » In robot form, he is immune. In human form, he is vulnerable.
Dustin Henderson: » Master of Puppets by Metallica » He doesn't have any particular traumas that would be Vecna-worthy » Dustin has certainly raved to Eddie that MoP is now his favorite song in the world. He would also have mentioned this to Kamala. » As a mere mortal young man, he would def need a song.
Dream: » Franz Schubert Symphony No.8 (thought Morpheus prefers the completed version. SNOB.) » Possibly? Morpheus does have his regrets. coughcoughorpheuscough » His older sister, possibly. Maybe. » If he had his powers? No.