Alphanumeric username

Normal

{{User21|TestA}}

TestA ( talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)

Sandbox

{{User21/sandbox|TestA}}

TestA ( talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)

Username with equal sign

Normal

{{User21|1=Billbailey=legend}}

Billbailey=legend ( talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)

Sandbox

{{User21/sandbox|1=Billbailey=legend}}

Billbailey=legend ( talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)

Username beginning with *

Normal

{{User21|* and Obelisk}}

* and Obelisk ( talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)

Sandbox

{{User21/sandbox|* and Obelisk}}

* and Obelisk ( talk · contribs · deleted contribs · page moves · block user · logs · block log · arb · rfc · lta · SPI · cuwiki)