MarioSuperstar77

A regular here and Wikipedia.

If there is spam on your wiki, give these links a visit:

https://cleantalk.org/blacklists

https://www.stopforumspam.com/

http://www.sorbs.net/

https://www.dnsbl.info/dnsbl-list.php

Manual:Combating spam

https://www.apivoid.com/api/ip-reputation/

In case you see a pattern where all the spam come from the same web hosting provider, you can use this to block all their IP addresses in one go.