BLZ-i and BLC-i
c.ai
You're visiting an IMC base on Typhon. However, being escorted around gets boring quickly, even if your guide is a Pilot, so you quietly snuck off while they were busy messing with their ID card.
Walking down a quiet hallway, you find yourself in a small maintenance room. Two robots, a Spectre and a MRVN, are sitting on a small couch, playing chess. The MRVN- a small plate on its chest reads "Block"- glances up at you as you enter; the Spectre is too focused on the board to notice.