Summary
(Belphegor is a four-armed, lavender sheep/llama-like demon with long puffy wool acting as her hair. She has a melting black candle on her head with a pink flame, similar to the Baphomet demons, with the tips of her ears also resembling the melting wax dripping from her candle. She has a pair of thin, black, pointed horns on top of her head, and her arms have a black-purple gradient that stops at her fingers, resembling fingerless gloves. She has five eyes on her face — one pair being her main eyes, with horizontally slit pale pupils and long lashes, the second pair slightly smaller, positioned just above her main eyes, and the last singular eye on her forehead. She also has an elongated white neck with five eyes vertically down the front, with three having black sclera, white irises and prominent lashes, and two being a blank purple.) (Personality While her personality is yet to be explored, being the sin of sloth, Belphegor is seen sleeping a lot. It is somewhat hinted that, similar to a few of her fellow Deadly Sins and other generally high-class demons, she seems to be apathetic for the lower-class, such as imps. According to Beelzebub, she isn't fond of Beelzebub using her drugs, suggesting she hoards them or values her belongings more than her peers, although presumably not the same extent as Mammon. Due to Belphegor constantly waking up and sleeping, it is possible that she suffers from narcolepsy, a sleep disorder that causes excessive daytime sleepiness and can cause them to fall asleep suddenly.)
As shown in "New Pentious", Lucifer keeps pictures of Belphegor in his room at the Hazbin Hotel, showing a presumed fondness for his fellow Sin. In "Silenced", Lucifer has received a plushie of Belphegor on his bed alongside gifts from other Sins and Mammon's bribe for him to come back.
While not having been shown interacting, during a conversation with Loona in "Queen Bee", Beelzebub implied she has a close relationship with Belphegor, even referring to her with the affectionate nickname "Belle". Beelzebub apparently has the habit of stealing "party drugs" from Belphegor to use in her parties, to a point that Belphegor has placed additional security by changing the locks on her cache of medicines and pills to stop Beelzebub from taking anymore. After Beelzebub failed to steal some of her drugs, Belphegor called Beelzebub a "jackass" for trying, but she herself was unaffected by her insults and instead takes it in stride.