okay, I'll edit this post with results. Link: normal Samus: normal Simon: He flies way up into the sky (that must be one strong spiny!), and without any death music, just... loses a life. Megaman: normal Bass: normal Bill: Same a simon, actually, but there's death music this time. Ryu: Surprisingly normal, I thought there was a pattern of everyone getting infinite velocity when they die on a vine, but I guess not. Sophia III: normal List now complete.
I'd like to say right now that simon and bill that I listed above has already been reported, so that entire list was pointless.