Beelzebub embodies slippery character (3)

I believe the answer is:

eel

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

'slippery character' is the definition.
(slippery fish)

'beelzebub embodies' is the wordplay.
'EEL' is hidden in amongst the letters.
However, I'm uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for eel that I've seen before include "Evasive type" , "Apode" , "Moray or electric, for instance" , "Slippery type" , "User of electric organ" .)

I've seen this clue in The Sun.

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