Yeslar

Yeslar is a high ranking Sylph contracted to Lilia Carol in 0-saiji Start Dash Monogatari. He usually has a bird-like appearance but can take on a humanoid appearance to fight and communicate with humans who otherwise can't communicate with spirits of his caliber. Yeslar is depicted as more level headed and docile than Lilia Carol's dragon spirit Reslar, often showing the ability to be patient and friendly with other humans such as Elrich.