Purple Sister is the CPU Candidate of Planeptune. She is the younger sister of Purple Heart.
Noire is the CPU goddess of Lastation.
Chocola and Vanilla are cat girls (neko girls) that work in a cafe. This anime OVA was based off the Nekopara VN games.
Snowdrop is a very advanced hIE robot/android girl. She has a playful personality and can control other machines using flower petals.
Azumi Kagamihara is allied with the Blue World and has Sword Sniper Rigel as her partner.