ima yeet this ball at yo fac-

There is also the fact that Pink ghost is also seemingly immune to taking magic damage based on Susie's rude buster while inside Pink body, when compared to Undertale lore on ghost which are vulnerable to magic. In fact Pink, Body specifically, take zero damage to every single possible attack except Noelle's Ice shock and Snowgrave (although said character isn't supposed to be available and even then it has to be done in one strike else her 7k HP regens back to max instantly, in the event that Pink somehow takes damage). The only other character in Deltarune to have a similar mechanic is Spamton Neo's neo defenses, although the HP healing max range is much lower when active only about up to 278.54 hp of max HP 4809, a range that allows Noelle's Ice Shock to actually kill him.

I wonder if Mettaton or Alphys will realize, after viewing the few records of her getting hit in battle by what should be a strong attack and perhaps Pink being willing to accept some defense tests, that Pink's body essentially has a functional natural version of the work in progress Neo body that is supposed to theoretically have Neo defenses.

On the what if Geno timeline, I wonder theoretically that the child has to prepare a powerful strike, perhaps through unconscious use of Deltarune's TP meter thanks to Pink and Sans presence, to actually hurt her and each power strike attempt gradually increases to reach her HP cap (I wouldn't be surprised if it is higher than usual due to ghost being fully merged with body); therefore, being the mirror counterpart mechanic wise to Sans dodging and the child trying to outwit the skeleton narrative.

it wouldn’t be too out of the ordinary if she did lose her head for whatever reason. like, oops that was an accident! but, it’s very interesting how battling pink would work. it’s a bit hard to tell how killable she is due to her narrative/scripted fight. however, the implication she is immune to magic is really neat. hm so, unlike undertale ghosts, pink is immune to magic but can take physical damage (would take a while).

not sure if alphys and mettaton could recreate that near immunity for neo, missing a key factor: a darkner. pink also is probably not a good model for neo’s defenses either, having 0 def. if pink were to be attacked, she’d take full damage each hit (thankfully having 7k hp). the same would be for neo. however, with her presence, alphys would finish working on neo’s defense.