Board Thread:General Discussion/@comment-30088034-20170108152544/@comment-24821641-20170123235039

"The locket and knife belong to Chara. This is clearest with the locket, where when it is equipped the narration (in its red font, i.e. clearly as Chara) says "Right where it belongs")."

Debatable. This is one of the cases they say "You equipped The Locket", not "I equipped The Locket." It's Genocide-exclusive text, it couldn't have been an accident. Asriel isn't wearing a Locket of his own in his normal form, just as the God of Hyperdeath. In this route, Chara kills Asriel, calls Frisk 'a great partner.' 'Best Friends Forever', 'We'll be together forever, won't we?' 'You feel it beating', too.

Single can decide, but there's my view.