The “Colin” from Whose Line Is It Anyway? is Colin Mochrie , the bald Canadian improv comedian who’s been a core cast member for decades.

Who Colin Mochrie Is

  • Colin Mochrie is a Canadian comedian and improviser best known for his work on Whose Line Is It Anyway?.
  • He first appeared on the original British version of Whose Line Is It Anyway? in the early 1990s and later became a regular on the U.S. version starting in 1998 with host Drew Carey.
  • He then returned for the CW revival in 2013, alongside Ryan Stiles and Wayne Brady, remaining a regular cast member through that modern run.

Quick career scoop

  • Colin trained and performed with The Second City (Toronto), which helped launch his TV improv career.
  • Beyond Whose Line , he has appeared in Canadian TV like This Hour Has 22 Minutes and other series and films, building a reputation as a versatile comic actor.
  • He’s especially known among fans for his deadpan delivery, one‑liners in games like “Weird Newscasters,” and on‑screen chemistry with Ryan Stiles, which are highlighted in many best‑of compilations online.

Very recent news

  • As of early 2026, Colin Mochrie is in the news for recovering from an emergency eye surgery, which led to some of his live Whose Line? ‑style shows being postponed.
  • Articles note that he has been a staple of Whose Line? since its 1998 debut and stayed with it through multiple network changes and the 2013 revival, which wrapped up its latest run around 2024.

TL;DR: “Colin whose line” refers to Colin Mochrie, the long‑time Whose Line Is It Anyway? improviser from the British original, the Drew Carey era, and the CW revival.

Information gathered from public forums or data available on the internet and portrayed here.