Yewl was a human male commander who was in command of Hivebase-1, an Imperial Tarkin Initiative research and development space station. He led Imperial forces when Hivebase-1 was infiltrated by the Son-tuul Pride, who sought to recover the memories of 0-0-0.
Commander Yewl debuted in the canon 2018 comic Doctor Aphra (2016) 18, written by Simon Spurrier and pencilled by Emilio Laiso.