A man of urban legend said to have stalked and harrassed young men in the area around St Helens in Merseyside. He reportedly approched youths at gymns and rugby clubs and asked to feel their muscles. Other myths about purple aki includine him carving his initials into their buttocks and playing naughts and crosses on them with a knife.
A man called Akinwale Arobieke, was imprisoned in Liverpool in 2003, he was said to be the real Purple Aki.
More info is available on the net if you look.
"Do your homework or Purple Aki will get you."