Gunn has often gone on social media to confirm major DC media news ever since he took the DC Studios reins with producer Peter Safran, and today was another example of that. He wrote the following on his social media platforms, including X (formerly known as Twitter), about Pierre snagging the Lanterns role:

The HBO TV series 'Lanterns' adds a new actor to its ranks, ready to bring John Stewart to life in James Gunn's DCU.

In addition to Creature Commandos, Peacemaker Season 2, and Superman, the new DC Studios co-CEO is planning to direct more titles in the rebooted DCU.

The DC Universe has officially found its John Stewart, with James Gunn announcing that Aaron Pierre will join the HBO series Lanterns as John Stewart. Casting had reportedly come down to both Pierre and Stephan James,

HBO's Lanterns TV show, the upcoming DCU series following the Green Lantern Corps., just cast one of its most important characters. Aaron Pierre is officially joining the series as Green Lantern John Stewart.