Supporting character from the franchise Bleach, former Captain in the Soul Reaper/Death God military (abandoned her position as mentioned in the trailer), technically has a sword but never actually shown or used in the entirety of the series, known for exclusively using hand to hand combat (funny how you mentioned "beats the hell out of me" because that's all she does to people), hangs out with Kisuke Urahara a LOT (never explained if there was any relationship between the two other than they hang out a LOT past/present), and she can transform into a cat at anytime and was never explained where she got that from. She willingly turns into a talking black cat who is completely harmless (as she retains her human personality/mind), and she is FORCED to transform into a weird glowing energy combat human/feline hybrid thing by a trolling Urahara (she would then have the personality of a cat and lose herself as a cat wanting to destroy stuff in a household). Jump Force decided to make it a voluntary transformation on command where she is still herself but gains extra combat power.

Also the default look you see for Yoruichi is the look used in the final arc of the storyline. In fact, all Bleach characters seem to use the latest possible outfit no matter how long that outfit was actually featured. Her actual outfit used for YEARS was actually something less revealing/skin tight.

I don't give a **** that I'm a weeb. So say it. There wasn't info, so there you go. I just gave you a crash course and wasted 32 seconds of your time.