Appropriately named Asboy, the fearless feathered fella has got everyone in a right flap by hissing at people on punts in the River Cam and pecking at them until they flee.
And it seems like this nasty streak runs in the family, as his dad - Mr Asbo! - was removed from the river two years ago due to his bad behaviour.
The swan even had his wings clipped so he couldn't return - and it looks like history could be repeating itself for his scary son.
Resident Mary Samuels, 67, explained to the Daily Mirror: "We thought things would settle down when they removed Mr Asbo but his son is even worse."
And boater John Gale added: "He's the most vicious swan I have ever seen."
It looks like the phrase "like father, like son" couldn't be more true on this occasion!
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