There’s nothing Chara can do to get out of this. The others can just tire out Sans with their love taps and dodge Chara’s attacks. The only way I can see them getting out of this, to get teh others to back off, is to hurt Sans soul themself.  That is an interesting though, what happens to a monsters soul inside a perfectly healthy body, does it die, does the body disappear, or does kinda exists out off time like Gaster did? ...Oh no! I should not have said that, ignore this comment… I’m so sorry.

Say, Mettaton. Couldn’t you just fly into Sans’ body in your ghostly form to see what’s going on?

Riverpersom… I understand why you’re mad wit gaster, but what he did was on good intentions, he wanted to save the skeleton he loved! Yes he did a mistake (a  lot of mistakes) and yes he can be a little insensible sometimes but come on! He’s not all that bad is he?