[Champion Concept] Atrovious: the Noxian Ravager
Role: Fighter, Tank, Assassin
Inspiration: I see a lot of diversity in the bruisers currently available, but I wanted to create one that can change quickly from a dps-type bruiser to a tank during the fight. I specialized his kit around killing assassins, starting with his unique Q mechanic.
General Design Philosophy: With such a flexibility built around dealing damage vs taking damage, I had to limit Atrovious in some way, mainly by lowering his mobility. His only movement-affecting ability is tied to a small dash on his Q, which is both his peel and initiation tool. Proper use of his Q would reward players for correct positioning, and directly influence how you play Atrovious: As a tank or assassin-killer. This is one Top-Laner who shouldn't be played as a split-pusher, and should be engaging with his team as much as possible.
Risk Analysis: Medium. Although Atrovious' flexibility in teamfights and duels is unparallelled, his lack of proper wave-clear and limited mobility will certainly cover it.
Appearance: A large, buff man who's almost completely obscured by heavy plate armor. The armor is specifically made to shift and adapt to combat situations, and it changes its appearance based on Atrovious' use of his W and E. When armored up, the spikes fold back to reinforce the armor, When unleashed, the armor extends outwards into more spikes.
Appearance References: http://i.imgur.com/D87GYIf.jpg http://i.imgur.com/CdL2up0.jpg http://i.imgur.com/dAUVw4o.jpg
Lore: Atrovious was born and raised in Noxus, and has taken their ideals to heart. He has studied war and fighting long before he was able to join the Noxian army. By the time he went off to battle, he was already ready to be a hardened warrior. His zealous lust for battle is unrivaled, and his complete utter devotion to winning conflict in the bloodiest way possible has made him legendary.
Strengths: Flexibility in duels, strong teamfight.
Weaknesses: Low Mobility, poor wave-clear.
Plays most like...:

Auto Attack: Atrovious swings one of his two swords in an arc. Crit: Atrovious swings his swords in an X pattern.
Passive - Combat Relish: Experience gains are increased while in combat, by a maximum of 12%. Every 0.25 seconds it ramps up by 1%, and this extra experience gains will persist for 4 seconds afterwards.
Q - Noxian Seizure: Atrovious leaps forward into the fray, carrying any enemies in a small line behind him along with him. At the end of the dash, he slams the ground with his two swords, dealing 20/40/60/80/100 (+40%AD) damage in an area around him and lowing the armor of all units hit by 5/5/10/10/15. If he seizes an enemy, the enemy is stunned for the duration of the leap and for 0.75/0.75/1/1/1.25 seconds afterwards. Icon - http://www.hiveworkshop.com/forums/resource_images/6/icons_5678_btn.jpg Mana Cost: 60 Cooldown: 18/17/16/15/14 Range: 200 (Grab Range) 400 (Dash Distance) 125 (AoE damage)
W - Armor Up: Atrovious shifts his armor into a defensive position, giving him a 50/75/100/125/150 (+30% Armor)(+10% AD) Shield for 2 Seconds, 30/35/40/45/50% Damage reduction for 6 seconds and 80/70/60/50/40% reduced movement speed during the duration. Icon - http://www.hiveworkshop.com/forums/resource_images/14/icons_13843_btn.jpg Mana Cost: 40/50/60/70/80 Cooldown: 12
E - Unleash: Atrovious unleashes the blades in his armor, dealing 90/110/130/150(+30%AD) damage to all enemies around him, then increasing his Attack Speed by 30/35/40/45/50%, Attack damage by 40/50/60/70/80, and lowering his Armor and Magic Resist by 40/50/60/70/80 for 6 seconds. Icon - http://www.hiveworkshop.com/forums/resource_images/17/icons_16489_btn.jpg Mana Cost: 40/50/60/70/80 Cooldown: 12
Note: Using either Armor Up or Unleash will immediately end the effects of the other ability.
R - Command Authority: Atrovious commands the battlefield around him, whether by drawing fire or inspiring fear in his enemies. Command Authority empowers Atrovious' auto attacks to deal damage in a wide cone in front of him for 6 seconds, in addition gaining one of these effects depending on Atrovious' active armor mode. Armor Up: Taunts all enemies in a 325 radius for 1/1.25/1.5 seconds. Unleash: Fears all enemies in a 325 radius for 1/1.25/1.5 seconds. Icon - http://www.hiveworkshop.com/forums/resource_images/13/icons_12691_btn.jpg Mana Cost: 120/110/100 Cooldown: 100/90/80
If you think it's broken/whatnot please let me know. Thanks for reading!

and
, however due to his good dueling capability and ability to resist burst damage he would be strong against champions like
and 
would be ideal, but it can also be effective as a disengage.
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