Who 'on earth' invented crazy frog?

Question

who would think of such an annoying thingie? hehe

Answer 1

Erik Wernquist.

He grew up in the municipality of Lidingö outside Stockholm, Sweden where he worked with people associated with the Sagateatern theatre group, notably Michael Lindgren (appearing in the Swedish 1980s television series Ebba och Didrik) and Henrik Dorsin. Together with these people, he created several plays, sometimes only acting, but also playwriting and directing.

He is probably best known to the general public for his 3-D animation "The Annoying Thing", now known as the Crazy Frog.