Who is Arn?
"Arnold Kim, born to an American mother and a Japanese father, thus began life as he was destined to live it... going in several directions at once. A brilliant neurosurgeon, this restless young man grew quickly dissatisfied with a life devoted solely to medicine. He roamed the planet studying martial arts and particle physics, collecting around him a most eccentric group of friends, those hard-rocking scientists, The MacRumors Demi-Gods.
And now, with his astounding jet car ready for a bold assault on the dimensional barrier, Arnold Kim faces the greatest challenge of his turbulent life...
... while high above Earth, an alien spacecraft keeps a nervous watch on Team MR's every move..."
Or something like that. I may be thinking of someone else.