Let's create the koukaku champion
As a fan of Tokyo Ghoul, I had to notice that there are 2 champions in the game representing 2 of the kagune types extremely well. These champions are Evelynn and Kai'Sa, I will show in detail what I am talking about.
In Tokyo Ghoul, ghouls are able to create special limbs with so called "RC-cells", which have special powers and characteristics. They are seperated in 4 different types, 3 of them are very specific, while the last one is more of an "allrounder"
Ukaku Type Also called the "feather type", here are the details how this type is described:
- big wing-like attachments on shoulder
- known for speed and mobility
- specialised in ranged attacks
- oftenly have barrage attacks
- can be used as a shield
Now let's compare that to Kai'Sa 
- wing-like attachments on her shoulder (jetpack like)
- has a speed buff and a dash in her kit
- is a marksman, therefore a specialist for ranged attacks
- has a barrage attack on her Q
- her ultimate dash also shields her
Rinkaku Type Also called the "scale type", defined by:
- regenerative powers
- soft and easily breakable
- strong penetrating strikes
- tentacle shape attached to lower back
Evelynn does match this description perfectly. 
- she can regenerate her health with her passive
- is a squishy assassin
- her charm shreds enemy MR, so her strikes are "penetrating" in some way
- has 2 tentacle-like lashers on her lower back
Of the 3 highly specialised kagune types, we are just missing 1.
Koukaku Type Also known as the "shell type". It is described as:
- having shell/armor shaped attachments below the shoulder blade
- strong defensive and offensive uses (can get shaped as weapons like drills, hammers, etc)
- slow and difficult to handle, because of it's weight
So, a champion like that should probably be a juggernaut in design, since hey are supposed to be slow, but have great defense and offense! I hope some people are willing to share some ideas how we could introduce a champion like that in the universe of League of Legends.
