Board Thread:Ben 10 Discussion/@comment-4969948-20160930222056/@comment-24922135-20161003000434

Yoponot wrote: I was talking about Season 1. Everything I brought up was about the first season for both OS and the Reboot. Obviously OS had a story.

OS S1 didn't deal with Gwen learning magic. Both Ben in OS and Reboot learn how to use the Omnitrix. Tetrax's story wasn't in OS S1 besides a filler ep and yet again he was just a character of the day there and we have no clue if any characters in the Reboot will be like him and show up again. OS S1 didn't deal with Ghostfreak and his minions.

I feel like I knew that but forgot then decided 'hey let's write that comment'

In any case I'd say Tetrax was important for teaching Ben to take the omnitrix seriously. Hunted wasn't filler, it taught Ben that there were greater powers at play after his watch. If anything, the OS season 1 story was 'hey I got a watch' then 'oh noes I hurt Max with it' then 'oh wow I am not ready to fight Vilgax again'. Though most of those points bar the first were only brought up once that season.