In this universe of characters, 6 characters vary, but some qualities of some characters prevail over the other.

Sans takes The Caretaker Role.
Toriel takes The Judge Role.
Asgore takes The Ambitious Role.
Papyrus takes The Monarch Role.
Gaster takes The Soulless Angel Role.
Asriel takes The Forgotten Scientist Role.
For example, AT Sans is 80% the personality of Тoriel, but only 20% the personality of Sans, and Toriel is 80% the personality of Sans, but only 20% the personality of Toriel. (Alt