Mr. Testis is the main protagonist of the running of the bulls in the Kukuxumusu drawings. He is blue, pot-bellied and has yellow horns and he is always seen in the nude. It is a long time now since he has remembered that he was originally brought in to run the running of the bulls invited by Mikel Urmeneta. Mr. Testis has stayed around to enjoy the Sanfermin fiestas and some of the things Kukuxumusu get up to during the rest of the year.
We have seen him running in a Marathon, skating, sailing, surfing, and traveling to Morocco with the winner of the Foreigner of the Year award in 2008...never at rest.
Mr. Testis is getting involvement each year in more and more things. Ever since he abandoned the two-dimensional drawings and became a giant teddy he can be seen at any hour in any place during the Sanfermin fiestas. Wherever there is a party, Mr.Testis is likely to appear.
Mr. Testis is also a compulsive looker-on. He enjoys all the best sites for watching the happenings in the fiestas. From some eighty balconies, throughout the fiestas Mr.Testis can be seen appearing on the balconies as an exceptional looker-on.