TWO-tone lobster Harley Quinn is something of a split personality.

Taking his name from medieval jesters in multi-hued costumes, he could truly be described as a colourful character.

He was found by a startled creel fisherman in June 2010, and judged as too unique to be served up as a seafood supper.

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So he was given pride-of-place in a display at Scarborough Sea Life Centre, where staff have been serving him dinner every day since instead.

While unusual blue, red, albino and even yellow lobsters have come to light in the past, Harley is regarded as the most unusual yet – and the odds of his bizarre pigmentation are said to be as high as 50m-to-one.

Growing steadily, he has just shed his unique armour for the second time since his arrival, and his keepers were delighted to see that his new suit is his most spectacular yet.

“Whereas he was previously a reddish-black on one side and light sandy colour on the other, he has now adopted a deep electric blue down one side,” said aquarist Amy McFarlane.

“He’s such a striking individual he did extremely well to avoid predators like conger eels and seals when he was in the open sea,” she added.

Now safe from attack, he could live another 60 or 70 years.