Petelgeuse Romanée-Conti/Relationships

Emilia
Betelgeuse knew Emilia when she was a child, often visiting her and her aunt Fortuna, enough to be described as being like a family. He cared about her deeply as he tried protected her with his life when Regulus and Pandora attacked her forest. However, after he went mad, he no longer recognizes her.

Fortuna
Like Emilia, Betelgeuse cared deeply about Fortuna, visiting her often and risking his life to save her.

Flugel
Betelgeuse was shown to be acquainted with Flugel, as he apologized to him shortly before taking in the Witch Genes of Sloth during his battle against Regulus.