Holt Hyde
Holt is the son of Mr. and Mrs. Hyde.
He thinks he is 16 years old.
Highly expressive and extremely passionate about music, Holt is the alter ego of Jackson Jekyll and, until "Dueling Personality," is unaware of his other half.
He only appears at night and has never seen the sun, despite his best efforts.
Recent information implies the transformation might be related to loud music, or is just another way to make it occur.
In the books, he is known by DJ Hyde and only appears when the temperature is high.
The books provide more background on Jackson and DJ as their mother explains they are...
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