Sellon's Guardian Bakugan

Watching episode 2 of Bakugan Mechtanium Surge, Sellon threw a Ventus Bakugan. But in the first episode, they've shown a Subterra Bakugan for Sellon's team, assuming that it's her Bakugan because she is the leader of team Sellon. Here it is:

But in the intro of the Bakugan Mechtanium Surge, Sellon is seen throwing a Ventus bakugan.

And yes, Sellon's guardian bakugan is a Ventus Skyron. She used her bakugan to try to bring down Zenthon, a Mechtogan in episode 2. Now the question is if she will be part of the brawlers team or not because Shun is already a Ventus brawler. Here's Ventus Skyron.

Update: I hope this is now the official Bakugan of Sellon. So the fist one is the correct one!
(Official image released)

Bakugan name anyone?