Let's do another one. This time...Bug types. First 16 to be mentioned get in tournament.

Dubs determine the winner of each round.
Only one representative from each line, first one mentioned gets in.
Two dubs or quads determine winner of the final round. Trips are counted as dubs.

Here are the previous winners
Normal Champion: Ambipom
Water Champion: Wailord
Fire Champion: Houndoom
Grass Champion: Leafeon
Flying Champion: Farfetch'd
Ground Champion: Phanpy

Go.

Pictured: Results of normal tournament to avoid dupe file thing.