どんすけ

Don Leon is Aurica's mind guardian. He lives in the world inside Aurica's mind, also called her "Soulspace" or "Cosmosphere".

Don Leon is Aurica's knight. He is very loyal to her, but also headstrong. Because Aurica is hurt so often, he is always trying hard to protect her. He is originally distrusting towards Lyner, but he is helpful inside Aurica's Cosmosphere.

He looks like a stuffed lion with a crimson mantle, a sword on his hip, and a casserole pan on his head.

Ar Tonelico Official Site and Ar Tonelico Wiki

Don Leon was originally a stuffed animal given to Aurica by Claire. Aurica's strong feelings for Don Leon gave him a physical form in her Soulspace./