Thread:Janus100/@comment-37472746-20191029152118/@comment-27794543-20191030001512

Once they go on a VPN, it's basically a game of whack-a-mole. You can contact FANDOM staff, but last I heard, they don't have any automatic tools to deal with this.

Some other options: But at the end of the day, until the vandal gets tired, it's whack-a-mole. Sorry, I wish I could give a more positive response.
 * If this person has specific pages they go after, semi-protect those pages.
 * If person is using IPs within specific range, do a range block.
 * If this IP is too much of pain, then disable IP edits on the entire wiki (option is in Special:WikiFeatures, "Require all contributors to log in") – while this can be easily circumvented by creating new accounts, it creates an extra hurdle for the vandal.