Dr. Coomer is a charismatic AI character in the game half-life 1, who becomes increasingly self-aware of his status as a video game NPC. Despite this, he remains a friendly and endearing character. he seems to act like a tutorial npc, and is powerful. if you use Playcoins, you can get stuff from him with Playcoins, about anything, but if you are in danger and only have 1 Playcoin, you can unlock the "Super player feature", it gives him superhuman strength and speed, which he uses to attack foes.