Christopher Lloyd is an American film and voice actor. He is well-known for playing Doc Brown in the Back to the Future franchise, and Judge Doom from Who Framed Roger Rabbit, the latter being referenced in Hacker's "Meet the CyberSquad" bio.
Lloyd is the voice actor for Hacker in most Cyberchase media. He also voices Hacker's in-universe actor, Christopher Droid, whose name is a play on Lloyd's.
Lloyd is prone to gesticulating while performing his voice lines for Cyberchase. He states that his movements have sometimes been filmed and used as reference for Hacker's animation.
- Christopher Lloyd Talks Voice Over vs. Live Action. Amanda Anderson. YouTube.