Crossword Genius

Ice hockey team overwhelmed by Alan, the Incredible Hulk (9)

Ross

I believe the answer is:

leviathan

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

'hulk' is the definition.
(thesaurus)

'ice hockey team overwhelmed by alan the incredible' is the wordplay.
I cannot really see how this works, but
'by' could be 'at' and 'at' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for leviathan that I've seen before include "Biblical sea-monster" , "Huge (sea) monster" , "Gigantic" , "Monstrous sea creature" , "Autocratic monarch" .)

I've seen this clue in The Telegraph.
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