Concept: Tank/Assassin

Yes, it sounds stupid, but it could work.

Your natural reaction to an assassin jumping your backline is to imediately try and kill him.........what if he was a tank? What if this is what he wants?

Concept: Animated Armor, Ghost Knight, Undead turned against their masters, Fallen Hero.

Story: Demacian Paragon raised from the dead and turned against his people by Noxus. eventually breaks free, vows vengeance. Etc Etc Etc.

Abilitys:

Martial Focus: Can Auto-attack while moving. Q: Scatterform: Silence/Blind self, gain Spell Shield, boosted damage resistance, and move speed while slowing enemies you touch. W: Immortal Coil: Shield that reflects damage absorbed outwards. If shield is broken, gain damage resistance/reflect. E: Fearful Symmetry: Passively gain tenacity, activate to mark a target, causing them to take all CC effects you do (For example, if someone slows you, your target will also be slowed.....and he doesn't have passive tenacity. Fun Ensues when Alistar tries to headbutt you out of his team and also manages to headbutt his ADC with you) R: Vendetta: Become Invisible and gain increased speed for a medium duration. During this time, the enemy is given a slight hint (darkness on the edges of their screen). Your next attack dashes towards your target, breaks stealth, and steals a variety of conditional buffs (You can't target another enemy, and the buff is lost when your target dies). You gain attackspeed and critical hit chance equal to your target's bonus attack speed and critical hit chance, and bonus AD based on 100% of their bonus AD and 150% of their bonus AP, as well as autoattack and spell damage reflection equal to their lifesteal and spell vamp that affects them only. (In essence, they just plain can't heal by hitting you).

While Vendetta is up, you can reactivate it to dash directly towards your target, attacking your target if you reach them. It's cooldown is reduced when they cast an ability.

Yes. Vendetta sounds OP, but read between the lines. It focuses on killing offense-stacking enemies, other Assassins, Marksmen, and Mages. It does nothing to a Tank, barely anything to a bruiser who has a better 1v1 kit. On top of that, it can only affect a single enemy. The entire hero is built around all-inning a single fed enemy, reducing them to paste with their own power, and then maybe being slightly useful. And it's the only Champ more or less impossible to snowball...........his damage comes from copying his opponent's damage. You aren't nearly as effective when they have nothing.