User blog comment:Cdswalkthrough/Known Quirk within One for All/@comment-46594423-20200811153437

It was stated that the previous OFA users had quirks that weren't "good". Meaning quirks that weren't powerful enough for AFO to hunt them down.

Plus if the writer's goal is for Izuku to use the past quirks in conjunction with OFA (like he's using black whip), then it makes sense for the other quirks to be tools similar to black whip.

What I'm getting at is I think we can rule out energy creation/manipulation quirks like fire, electric, wind, and physical enhancers like hardening, strength/speed, healing/regeneration...

Thoughts?