Board Thread:Wiki Discussions and Support/@comment-2140588-20141219170959/@comment-2140588-20141220124155

Sarutobii2 wrote: How can Guruguru be a nickname? Its not like spiral zetsu had parents to name him and Obito and Madara could basically name them whatever they chose. Of all things Obito named him and the databook conflicts with that as it has done with many other things that have been said in the manga. Guruguru is an onomatopoeia of swirling and Obito, not knowing the Zetsu's name, used this to address him. We don't know if Tobi was its name before meeting Obito or after, the fact is that it's probably its real name. Also, as I recall "Guruguru" isn't official in the manga and the anime didn't give a name for him at all.