Pina

Pina is Silica's blue feathery dragon with its body covered in soft, pale blue feathers with two feathers instead of a tail. Its species is «Feathery Dragon». It is the first monster to be tamed in Sword Art Online. It understands Silica's commands and will protect her in any way it can, as it is her «Familiar». He is also present in ALO as her Cait Sith familiar.

The Black Swordsman (Aincrad 35th Floor, February 2024)
Silica finds Pina roaming around, and when she feeds it peanuts that she recently bought, it quickly became attached, making Silica the first tamer. Later, they got lost in a forest, where they were surrounded by monsters. Silica was losing, but they persisted. However, Pina was losing its life. But instead of becoming pieces of polygon shatters, it becomes a heart, which can be saved in three days. However, the place Silica needs to go is a level much higher than her own. Kirito offers help to accompany her to go to «The Hill of Memories» on the 47th floor, hoping to obtain the revival item «Flower of Pneuma ». She is successful on her quest, and she revives Pina.