What's that one Character/Skillset you can't get with all your luck?

Mine is Strike Dabi, I just can't get him for all I'm worth.

https://preview.redd.it/2kfhqceanj6e1.png?width=1920&format=png&auto=webp&s=9c3191437427d4be1e08e54e1f995b5484a180a3