These users are sockpuppets of Utc-100 (talk · contribs), as demonstrated by CheckUser.

This category lists confirmed sockpuppets of: Utc-100 (talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)

To add an account to this category use ((Sockpuppet|Utc-100|confirmed)) if confirmed by a checkuser or ((Sockpuppet|Utc-100|proven)) if the behavioural evidence makes the link beyond reasonable doubt.