Relationship With Microsoft Mike
It is believed that Microsoft Mike's DNA was used to create the AT&T Mike. So, they are both considered to be identical twins.
AT&T Mike joined Linux Anna to destroy the Speakonia voices, as well as all the others. They were revealed to be working together in Season 7, Episode 4 in Thunderbirds101's Microsoft Sam Reads Funny Windows Errors. In Season 7 Episode 5, It was revealed that AT&T Mike betrayed Linux Anna and killed her off.
Domingo0022 classifes AT&T Mike as a national threat, and should be eliminated on sight. So far, no real damage has been done by AT&T Mike, but him and Linux Anna ae both very dangerous.