Ok. I've got me lore. It's awesome. It's fantabulous. It hits every heartstring you got, and you'll grow some more just so those can get hit by this beautiful lore too. Adventure, love, heartbreak, tragedy, redemption, hope, it's all there. Hell, why is this lore in League of LoL when I could write this as a book and make millions and be the next JKR? Screw it; I want my awesome LoL character, that's why.
Anyway, I've got this awesome lore...
But nowhere did I make it fit into the actual lore of the League.
/insert expletive here/
So, how do we fix this? Obviously this won't happen all the time, but sometimes when we create a character, we begin with an archetype, or our abilities dictate an archetype group that we pick from. How, then, do we write our lore as such that it fits with all the canon lore of the actual game?
I want a Roman Legionnaire (BTW, where the hell IS the legionnaire in this game?) Do you go the route of a lost civilization, with him misplaced in time? A sub sect of the Rakkor with fewer mystical weapons, so they had to rely on superior massed infantry? Hell, summoned one from another plane? (That’s bad actually. scratch that last one)
Each has their own pros and cons. A lost civilization might not interfere with canon lore, but it also is really hard to create convincing lore for, whereas a sub sect of the Rakkor provides a lot of material for you to work with, but how much canon can you bend before it breaks?
How do you choose what to do?
Let's get trickier. How about something that harder than just saying "oh, he's Rakkor!" or "oh, he's from Shurima!"
Imma use, say, Lord Soth from the Dragonlance novels as my inspiration.
Basic rundown: a once proud knight, one day he went mad and slew his whole family. Now, he's cursed to haunt his castle forever, and be tormented by his family's dying screams every night.
Obviously, we change some things up to not blatantly rip off the work of Weis and Hickman, but we've got our story. Our new knight (let's call him lord Tosh) is probably Demacian given their ideals and how that matches up with what we want. The problem is, where in Demacia is he from? It needs to be somewhere out of the way, because an old haunted castle just NEEDS to be remote, (seriously, it's in the Geneva Convention) but how do you decide where that is? how do you write a scenario where Demacia doesn't ask "uh, why is lord Tosh not at this month’s meeting?" and then bind him to their will when they find out his new lot in life? And suppose we want a little subplot of Noxus wanting Tosh's power for their own? How would we incorporate such little plot elements?
Tl;dr: when we have our character all fleshed out, how do we bend cannon to fit them in without breaking it? Additionally, how do we decide just where in canon to put them in the first place?