The naming in the client is not accurate in some sense
The story starts with the creation of the champion, then the testing and stuff with the team's effort, players getting really excited on the champion's release, then playing for 16 hours to collect Blue Essence to get the 6300BE champion. As soon as I click unlock a pop-up screen tells me that "Item unlocked" it is not easy to manifest. If I compare between the client language and the actual game language I can see which is more realistic here, but I leave the choice to you. All of the champions are considered items is a bit "off" to me :).