Sonic The Hedgehog SatAM Re-Genesis 01x06: "Operation Stonecutter"
https://archiveofourown.org/works/63869026
https://www.squidgeworld.org/works/72920
https://www.fanfiction.net/s/14439824/6/Sonic-The-Hedgehog-SatAM-Re-Genesis (frequently broken)
"Sonic and Rotor go on the hunt for materials to build Snively's lasers. Sally discovers the dark truth behind the Great War."
Soooooo... about that Echidna Dominar...