Who are the truly aces of kpop?

I often see people labeling some idols as aces and 99,99% of the times i don't think is true. Like, i would not call a "ace" a idol who is a amazing dancer, a average singer and does a rap in a song once in a lifetime. This is just a example, but its really commom, people calling idols who are great in a area and decent in others aces. I wanna know which idols are truly aces, that are awesome and exceed in everything a kpop idol can do.

(english is not my first language so maybe some words are spelled wrong).