The Lost Seasons presents a
Generation One story from Season 2.5.
It's
The Ties That Bind, featuring Optimus Prime, Elita One, Ultra Magnus, Alpha Trion, Ariel, Dion, Vector Sigma, Ratchet, Wheeljack, Perceptor and more!
This story is a direct prequel to
Attack of the D.I.A. Clones, and it's 11-pages long, so you'll have to go directly to the Blog post to see all of them (or just click on the story link above to reach the folder).
Check
the blog for more updates and notes!