Emperor is a hip-hop artist in the world of Arknights as well as the founder/CEO of Penguin Logistics.

Emperor is one of the three musical acts that the player can support on Heart of Surging Flame, awarding the Stylish Portable Stereo once the Siesta Obsidian Milestone is completed (except in the rerun). He is also the deuteragonist in Code of Brawl.

(Source: Arknights Wiki)