Ol' Cronchy was a Zeldrate that belonged to Yarvok, who served as a lieutenant within the Nova Blades pirate group. Yarvok held Ol' Cronchy in high regard, often referring to the creature as his "beloved." He felt similarly about his other Zeldrate companion, Spike. After Krupo, Yarvok's dedicated beast wrangler, experienced an unexpected shipwreck on the planet Dantooine while transporting Yarvok's pets, including Ol' Cronchy, many of the pets were lost. This event provoked both worry and anger in Yarvok. Yarvok threatened to kill Krupo if the missing animals, Ol' Cronchy included, were not promptly recovered, expressing concern that they were terrified and stranded on Dantooine, which he described as a "grass ball."
When the Commander arrived on Dantooine to investigate reports regarding Darth Malgus at the Jedi Enclave, Ol' Cronchy was observed in the vicinity of the Enclave's entrance, accompanied by other of Yarvok's misplaced pets, namely Fuzzy and Yug. Ol' Cronchy seemed to favor the frozen meat shipments that had been scattered around the area due to the crash.
Ol' Cronchy made an appearance in the Secrets of the Enclave flashpoint and received a mention in the Codex entry about Invasive Species on Dantooine within the Onslaught expansion from 2019 for the massively multiplayer online role-playing game Star Wars: The Old Republic, which was released in 2011 by BioWare.