Reggie (Heart of Evil)

Reggie was the pet of Radley Crown, and worked as a guard dog at Quest Research Laboraties, until a near-fatal accident on the job caused him to become Dynomutt, transforming him from a regular dog to a talking, cybernetically enhanced superhero sidekick to Blue Falcon (the new identity of Crown).

Physical appearance
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Personality
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Early life
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Appearances

 * Scooby-Doo! Mystery Incorporated
 * 214. (flashback, no lines)