Its a cartoon man's face gritting his teeth and pulling back his gums so we can see the teeth. he has a beard and is wearing a salors hat. his eyes are black dots and in above him his brow is furrowed in anger.
This is a Brutus icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,700 icons, all in the same style and quality.