Thomas James Ridgewell (born 27 June 1990), known online as TomSka, is an English YouTuber, filmmaker, vlogger, comedian, actor, musician, and former animator.

He is known for writing, directing, producing, and starring in his live-action sketch comedy YouTube videos and animated web series such as Asdfmovie (/ˈæsdəfmuːvi/ AS-dəf-moo-vee), Crash Zoom,[2] and Eddsworld where he both provided the voice and inspired the character of Tom and served as showrunner from 2012 to 2016.

[4][5] His would-be twin sister Amelia died prenatally after Ridgewell's mother was injured in a car accident.

[7] Shortly after YouTube was established, Ridgewell created CakeBomb,[8] a website where he posted his projects, including his animated web series Asdfmovie and his late friend Edd Gould's Eddsworld.

[12][13] Ridgewell engages in social commentary through his YouTube channel, covering topics such as mental health and personal relationships.

[21] A book titled Sam Kills Christmas, written by Ridgewell and Eddie Bowley with illustrations by Dorina Herdewijn, was released on 8 November 2018.

[22][23] In 2008, Ridgewell released the first episode of Asdfmovie, an animated sketch comedy series featuring short clips of minimalist characters in surreal and occasionally darkly humorous situations.