What do character titles like 'the Hungry' or 'the Clumsy' do, and what does the code on the back of a title card mean?

Question

Accepted Answer

Titles appear to be roleplay flavour with no mechanic of their own. The code on the back is a unique component identifier, which the designer says is on most components so they could be referenced by in-game mechanics; it does not mean a matching card exists.

Arydia: The Paths We Dare Tread

What do character titles like 'the Hungry' or 'the Clumsy' do, and what does the code on the back of a title card mean?