Tumblr Sexymen vary greatly, although they generally are evil or otherwise have some sort of quirk that separates them from "normal" characters.
[1] Isaiah Colbert from Kotaku described Tumblr Sexymen as typically having "a bean sprout physique" and "a theater kid's bravado",[2] while Ty Galiz-Rowe from Gayming Magazine said that they are "usually tall, white looking, dress well, and have a dark or evil side to them".
[3] The most commonly agreed upon criterion for a Tumblr Sexyman is a large and vocal fan following, with some characters failing to be considered Sexymen due to having smaller fandoms.
The Once-ler was also the subject of a large amount of fan art and shipping, a pattern that would continue for other Tumblr Sexymen.
In response to the event, Undertale creator Toby Fox wrote a fictional account which featured imagined details of Sans's victory.