Please note I'm not an omniverse fan and sometimes it shows in my writing

Yesterdays Sins: Kevin's Story
A Ghost from Kevin's past rears it's head in the form of a pretty face, and bargain that might be too good to pass up.
https://www.fanfiction.net/s/5901301/1/Yesterdays-sins-Kevin-s-story

Yesterdays Sins: Albedo's Story
As Albedo's escape pod falls to earth after the lose of the Ultimatrix, he's lost everything and his life begins to flash before his eyes.
https://www.fanfiction.net/s/6458768/1/Yesterdays-Sins-Albedo-s-story
Ben 10 Unforgiven
Gwens always the grown up free from the ego that plagues Ben from time to time. Except for one summer not that long ago, and it had a price.
https://www.fanfiction.net/s/6728519/1/Ben-10-Unforgiven

Please note the next few are an interconnected series of stories that kind of got out of hand. If your not into uber crossovers I'd give these a pass.
Clashing Egos
Success can be more devastating then failure. Ben and his newfound ego come to Amity Park, and Danny has to deal with not being the big kid on the block, in the face of the power of the Omnitrix. Oh ahem AND THE FATE OF THE WORLD HANGING IN THE BALANCE!
https://www.fanfiction.net/s/5379382/1/Clashing-Egos

Breaking the Sky
This is about Hero's and powers and growing up with the weight of all that. A comic book style adventure with lots of kicking butt, and maybe a hint of morality in their somewhere. We pick up where Clashing Egos left off.
https://www.fanfiction.net/s/5458867/1/Breaking-the-Sky

Long Hot Summer
In the aftermath of Breaking The Sky Gwen Tennyson runs away, leading to one memorable summer. Ben 10 Danny Phantom and a bit of Kim Possible because I watch to much TV.
https://www.fanfiction.net/s/6203905/1/Long-Hot-Summer

Any and all Feed back is welcome wither here or on FFN what ever is easier for you.