This is a X-Men 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 13,300 icons, all in the same style and quality.
Idea of X-Men Icon by Robin
We've received the idea on August 23, 2012 and created the icons on September 10, 2012
Superman, Spiderman (new & old), Batman (new & old), Avengers, Green Lantern, Fantastic 4, Captain America, Dare Devil, Punisher, Xmen, The Flash, Wonderwoman