User blog comment:MisterWoodhouse/Resolving your overlapping username on Fandom and Gamepedia/@comment-1586832-20200421174150/@comment-24006128-20200421174528

In Phase 1 of the UCP, Fandom and Gamepedia will have separate designs. If it's a client-side script, it should continue to work on the Gamepedia Hydra skin.