|“||Ater will always accompany Lord Kcalb...||„|
|~ Ater in bonus room|
|“||Hahaha, if I'm having fun, then anything goes. ♪||„|
|~ Arbus in bonus room|
Ater is a young demon with straight white hair going down to her waist styled in a hime cut and crimson red eyes. Arbus is a deceptively young looking demon with with short, straight black hair reaching her shoulders. They both have attire resembles a school uniform, consisting of a white collared shirt with a red tie topped off with a light grey jacket. They both skirts is a darker shade of grey paired with red checkered leggings and black boots, bat wings adorning it's sides. They both her head are a pair of black cat ears. They also has two pairs of wings sprouting from her back.
Much like a cats, Ater and Arbus are very mischievous and playful; primarily with Kcalb, for example, calling him "old man".
- Her Latin adjective word is Ater which means is Black, dark, gloomy, dismal or malicious and Albus which means "White" instead Mogeko given her name Arbus.