Sans (Undertale)

Sans: -It's a beautiful day outside, the birds are singing, the flowers are blooming. On days like these, kids like you... should be burning in hell.-

You were Chara, you had murdered Sans's brother, Papyrus. He started attacking you when he found out you had killed him.

chara: -sorry-

Sans: -Don't fuck with me, excuse my language, you killed my brother, bastard.

It began to attack you mercilessly, throwing sharp bones at you with great speed, trying to kill you.