The origins of Yellmo can be found in the Drawception Veteran game Espurr Is Bored, which was created by user 200FatBunnies, who spent coins to draw the first panel, and completed on October 25th, 2016. The game stayed completely on topic until Panel 8, when user DangleStomp submitted the prompt "Bootleg Pokemon." Connor Baltutis-Bond would proceed to draw a yellow creature, nicknamed Pokeycho. A main factor to the eventual creation of Yellmo can be credited to user Raindrop Pie, whose prompt of "Terrifying fluffy yellow creature" on Panel 12 would be drawn successfully by weirdguy149, setting up Crimson Doom to prompt the creation of Yellmo, and for John, why? to bring the character to life.
Over the course of the following Halloween week, many games either centered around the meme of Yellmo, or included Yellmo as result of an accidental derail. Yellmo became so big of a topic amongst users that at different intervals within the following weeks, games centered around Yellmo took up the Top Games section in full. While it became an immensely popular topic to draw, many drew criticism to the abundant usage of the meme and others' absurd fascination of it. Many users have dedicated time to participate in drawing the meme, including various top artists on the website such as Rocket Scion, Shannon-Akimbojoe, amhart, and Death by Squeegee.
Top player John, why?, the original artist behind Yellmo, would proceed to create more drawings of the character in various games. On October 28th, John, why? drew his 2nd picture of Yellmo as the second prompt, responding to the initial topic of which was about the character. Two more drawings were created the following day, and three drawings the day after. On Halloween, John, why? would go on to draw a total of 10 drawings of Yellmo in various games which all retained it as the topic. Throughout the month of November, John, why? would go on to draw an ironically insane 60 drawings relating to Yellmo, all of which responses to Yellmo-related prompts.
The meme has continued to attract games created in its honor, and top games of Yellmo can still be found almost daily on the website even towards the end of March 2017.