About Aster: Aster was created by Eggman Negative in his attempt to create a superweapon against his previous adversaries post-Sonic Rivals 2. After a couple of hiccups and a whole lot of confusion, Espio and Silver find themselves raising the mobian with powers undiscovered, yet familiar...Aster is stubborn, literal, and aloof--but finds quiet appreciation within the beauty of the world she's in. 

About Astral: Astral is the eldest son of Knuckles and hence the next-to-be Guardian of The Master Emerald. However, tragedy struck at a young age and he was attacked by an unknown creature. The attack blinded him but in its wake he developed clairvoyance. Since then Astral has taken the mantle of protecting both The Master Emerald and The Timeline, tutored by both his father and occasionally Silver The Hedgehog.