On March 17, 2019, in response to a post on the Sonic the Hedgehog Twitter account celebrating St. Patrick's Day, YouTuber Jacksepticeye jokingly asked if he could voice "Irish the Hedgehog", to which the Sonic the Hedgehog Twitter account responded:


A year later, they made good on this promise, releasing a video titled "Irish the Hedgehog" on the official Sonic the Hedgehog YouTube channel. According to Sega, the character was designed by artist Mark Hughes, and the video included a "folksy" remix of the song "Escape from the City" from Sonic Adventure 2 made by Hyper Potions and Jun Senoue.

A few years afterwards, Jacksepticeye would return to the Sonic franchise to voice another character: the appropriately-named Jack from the "Sonic Prime" episode "It Takes One to No Place".