Super hero champion?

So league doesn't really have super Heros, so I thought one would be cool. But before I give him a full on back story, lore, and make him fit into the league environment I wanted feed back on if a superhero would be fitting and feed back on the kit I had in mind.

He will be a fighter/tank

Passive; fight or flight

You are given the ability to toggle if the champion is on the ground or in the sky flying. This has some cool particles maybe like short lighting sparks around him.

Base move; close up punches.

He has no weapons nor giant gloves, just fist punches.

Q; Strength of Hercules

A massive brute force punch. If w is active the punch wIll send the opponent flying back a fairly large distance, good for escapes and good in combination with his ultimate.

W; speed of sound

This increases the speed of his attacks for a few seconds. After 3 punches his fists catch fire and the opponent is burnt.

E; Indestructible

All damage from every form, true, ap, ad etc. are reduced by 50-75% for a few seconds.

R; commit punch.

If you are on the ground with no passive active you can not use ultimate. If your passive is active and you are flying you go hurdling a great distance( meaning travel the map) to land a punch on an opponent doing damage. If Q is active during the ult you send opponent flying. if w is active you become enveloped in flames and all targets near the opponent hit are burnt. If e is active all team members caught in the path are shielded for a few seconds.

His ultimate can be combined with his w and his q. If w and q are used to knock the opponent back or airborne you can combine his ultimate by aiming it at them and catching them by pressing r again when you reach them. ( can be used on other champions knock ups). Catching them will send them flying off in your arms as you are sent in a death spiral doing damage to them as you cross all terrain. If the end of your path leads to to an opponent the opponent in knocked back.