What is Dot Com's first name on 30 Rock?

Dot Com's first name on 30 Rock is Walter.

The character's full name is Walter “Dot Com” Slattery. He is a member of Tracy Jordan's entourage and is portrayed by Kevin Brown. Unlike Tracy's frequently chaotic behavior, Dot Com is generally articulate, educated, and practical, often serving as the group's voice of reason.

The nickname comes from the character's stage name within Tracy's entourage, but “Dot Com” is not his given name. The series identifies him as Walter in cast listings and character descriptions. He is also described as a Wesleyan University-trained stage actor, a detail that helps explain his cultured and unusually formal manner.

Dot Com is often paired with Grizz, Tracy's other close associate. Their friendship and loyalty to Tracy provide a recurring comic contrast with Tracy's extravagance. Later in the series, Dot Com becomes involved in producing Grizz's sitcom, showing that his theatrical ambitions extend beyond simply working as Tracy's assistant and entourage member.