My favorite emoji is this lil guy: . It's not supported in any major/popular emoji font (emojione like mastodon uses, apple, android, etc). But it *is* supported in twitter's set, and *was* supported in ios 5. It's also supported in a few other more niche emoji fonts, mostly older ones.

The emoji, Shibuya 109 (now named just Shibuya), was the only emoji excluded from the process of being adapted to official unicode codepoints. The codepoint, 0xE50A, is still considered part of a private use block.