Crossword Genius

A digital character (3,5)

Ross

I believe the answer is:

tom thumb

I'm a little stuck... Click here to teach me more about this clue!

'a digital character' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's a link between them I don't understand?

This is all the clue.

Can you help me to learn more?

(Other definitions for tom thumb that I've seen before include "Tiny child of fairy tale" , "Notably small person" , "Small hero" , "Diminutive character of English folklore" , "Tiny hero of nursery tale - digital?" .)

I've seen this clue in the Evening Standard.
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