The 'Tumblr Sexyman' refers to a specific archetype of fictional characters that garner an intense, obsessive following on Tumblr, often despite their unconventional or non-human appearances. The trope typically involves characters who are thin, well-dressed, morally ambiguous, or aesthetically unique, with famous examples including The Onceler from The Lorax, Sans from Undertale, and Bill Cipher from Gravity Falls. The term itself evolved from fan subcultures into a widespread meme as users began ironically or earnestly categorizing characters into these specific fan-driven aesthetics. Today, the meme is used to roast new character designs that fit the 'Sexyman' mold or to celebrate the bizarre internet history of character obsession.