宇宙超级无敌我鹿哥
[yŭ zhòu chāo jí wú dí wŏ lù gē]
This nickname is playful and full of self-appreciation. '宇宙超级无敌' means 'Universe Super Invincible,' while '我鹿哥' means 'my cool/dear鹿(brother/buddy), where '鹿' (Deer) sounds similar to a slang for 'cool/good-looking,' making the entire nickname a cheeky, exaggerated way of someone saying they are one of a kind.