Apollo (The World God only Knows)

Apollo (アポロ Aporo) is the second oldest of the Jupiter Sisters. She is residing within Kanon Nakagawa.

Personality
Apollo has a rather childish nature, which is shown during her interactions with Kanon. She considers herself as "bad at thinking," impulsive, and someone who frequently speaks and acts without thinking. She seems to be rather carefree, although her sisters state that Apollo is very cautious, proven by the fact that she used an extremely desperate and risky spell to counter the equally dangerous one cast on her by Vintage.

Appearance
It is unknown how Apollo actually looks. Apollo assumes the same appearance as her host, Kanon, when she is present. The only distinguishing features that Apollo has when she is in control of Kanon are arrow-like markings under her eyes, along with a dot on her forehead.

Abilities
Apollo's power has not yet been measured. During her brief interaction with Fiore, she shows that she is an adept spell user as she manages to cast a wide-range warning sign in the sky before collapsing. She even preserves her host's life using another complicated spell while being trapped and greatly weakened. Later, it is revealed that Apollo can apparently tell figments of the future and is a very capable healer, since she heals Keima's cold during her "submerged" state. Vulcan even mentions that she is "the expert in the healing arts."