Some of the skins in league have some pretty cool lore behind them

For example, take His justicar skin is how he appears to the people he aids. His Sea Hunter skin is how he appears to the people of Bilgewater. *edit: I done goofed. This is how he would appear as a Marai pirate. Mecha Aatrox is not actually Aatrox, but a robot created by Rumble and Heimerdinger, inspired by the legends of Aatrox.

For some champions, you have to stretch it a little bit, but you can get some cool things out of it Dynasty and Midnight are how she dressed while she was still seducing humans for their souls, just her daytime and nighttime dress. Foxfire is how she appeared just after becoming human. Popstar is what her career would have been if she had not become a champion in the "league" (or whatever it is that these champions are fighting for) Challenger is how she would have appeared if she had continued to consume the souls of humans. Academy is how she would have appeared if she had gone to school.

On some champions, we can only speculate wildly Pharaoh: If we assume this to be cannon like the other skins, then this is Amumu post mummification, about to be placed in a sarcophagus. We can also assume this to mean that he was a Shuriman king while he lived. Little knight Amumu is the start of a little story arc. Amumu came back from the dead with no memories, and no knowledge of the world. With this in mind, he went to school with Annie (probably with some illusion magic that he got by having some mage take pity on him). While in this school, he got a role in the school play, which featured the legends of king Arthur. On opening night, he broke the sword prop, and was kicked out of the play. After a couple of months, Amumu had the idea of wrapping himself up and sending himself as a gift to Annie, his only friend. He got re-gifted. Later, he almost became prom king, but lost to some guy with Trump Hair. This defeat drove Amumu into a deep depression, which is seen in Emumu. Sad Robot was an AI that was made to replicate Amumu's state of persistent sadness for research purposes. Also, they were allowed to do more to a Robot than to a real (even if undead) person. In Suprise Party, some of the other champions threw a Party to celebrate the memory of Urf. Amumu came to join the fun, but he ran into the table with the cake, knocked it over, and ruined it. He got kicked out.