Who do you think will fill the Arcade spot and the Final Boss spots ?

So, at first I thought that it was just one skin line, and we where missing a top laner. However as it turns out, they are making 2 skin lines that are connected. So we are missing a Arcade Mid laner, A final Boss adc, A Final Boss Jungler and A Final Boss Top laner. Here are the champs that I think could get the roles:

Arcade

1. Orianna: The most obvious pick for mid lane arcade. She fits the theme VERY well and would make the most amount of sense.
2. Viktor: A lot like Ori, he would make a great Arcade skin line, however I would have found him better for a final boss skin, but Veigar got his place, and Top Lane Viktor is not exactly meta.
3. Syndra: A board member posted this idea and so credit goes to him/her, I am sorry that I do not know you Biological Gender. (http://boards.na.leagueoflegends.com/en/c/skin-champion-concepts/1FUYGkEH-arcade-syndra-idea)

Final Boss

1. Aatrox: He would be all dark colored and shit, awesome
2. Rumble: Would make a lot of sense, but since he already has SGR, maybe he could give it to.....
3. Heimerdinger: Is very mechanical, a lot like Rumble, and could also fit the theme very well. Him in the top lane is uncommon, but it does exist and it has one of the best win rates.
4. Singed: Cause fuck it, his poison trail would be Nyan Cat, and it would be the best thing in the game
5. Jinx: The best ADC for this skin line, she would fit like a glove into the theme
6. Naut: Would make for a interesting final boss
7. Rengar: Very far fetched but possible

Tell me what you think fellow boards members, did I forget anyone ?