Colonnello is the holder of the Blue pacifier of the Rain. Though he is not part of the original seven Arcobaleno, he attained the blue pacifier after attempting to take Lal's place on the day that they were all turned into babies. He is in charge of the training ground behind Mafia Land and was a former member of the COMSUBIN. Thus, he is not averse to using heavy artillery, using an anti-tank rifle as his primary weapon. His animal partner is a falcon that usually rests atop his head and it can help him fly to distant places. Colonnello also acts like a rival towards Reborn and vice-versa, but despite this, he shares many traits with Reborn, like being amerciless tutor, suddenly taking naps and having a sharp tongue. He trains Ryohei in preparation for the Vongola Tournament and in the future, he is said to have died protecting Viper.
an extended description!