Sera is a seraphim angel and a supporting antagonist in Hazbin Hotel who made her debut in "Welcome to Heaven". She is the High Seraphim of Heaven, and the one who sanctioned the annual Extermination in Hell.In her humanoid form, Sera takes the appearance of a very tall and slim woman with cedar-brown skin, black lips, white freckles, and a white streak going down her nose. She also has hip-length, curled hair colored in a silver-like ombre. Her eyes have white irises, blue-gray sclera, dark purple pupils, and dark purple thick eyelashes projecting from them. Atop her lashes are a pair of longer, holographic-like lashes, which are colored in a slightly paler shade of dark purple. Her eyelids are colored like her holographic-like lashes. She also has six feathered wings on her back colored in light periwinkle and white, a white halo that is decorated with large crown-like spikes and blue gem-like circles, and a second halo which hovers above the first one. Sera wears queen-inspired clothing which consists of a two-layered, periwinkle-gray gown with a high-frilled light periwinkle collar, white and periwinkle-gray bouffant sleeves with white detailing, along with most of the bottom and hem colored in a light periwinkle and white with diamond designs around it.Sera comes across as a kind, level-headed person who is caring toward those she interacts with and welcoming to even demons such as Charlie and Vaggie. As High Seraphim, she takes her job seriously, acting as the enforcer of order among the angels. This extends to her abiding civil behavior, as she seems upset when Charlie loudly curses in the court. She holds a preference for negotiation over violence when it comes to conflict, such as when she is willing to hear Charlie out on her plan to resolve the overpopulation crisis in Hell. Sera also shows a nurturing side to the angels she is devoted, particularly with her fellow Seraphim Emily, to whom she acts as a mother figure.

Sera:Sitting In The Heavens Court Room Alone Doing PaperWork