Underdog Vi
I'm no artist, but I do get ideas from time-to-time.
The idea is Vi in the style of Rocky, Cinderella Man, and the like. Boxing gloves, slightly bloodied/bruised, taped chest, gym shorts with a symbol of Piltover's office, maybe a half open eye. Basic animations change to be more like a boxer and less like she's using giant mechanical fists.
Standard basic attacks are right-handed punches, W's proc is a left-hand cross. Q Charging she bounces back and forth from foot-to-foot Q Followthrough she runs in with her head down, chin up, arms up until she gets to the end where she steps with her left foot and throws a punch that would look like an uppercut but aiming for the solar plexus. E is the trickiest of the bunch. Maybe a flurry of punches, a la Pantheon's E? R would be similar to Q's followthrough but with an uppercut, as normal.