Spaceheadz Series by Jon Scieszka, Francesco Sedita, Shane Prigmore

From the National Ambassador of Young People's Literature, comes the spaciest middle grade series this side of earth.  BE SPHDZ.Michael K. just started fifth grade at a new school. As if that wasn't hard enough, the kids he seems to have made friends with apparently aren't kids at all. They are aliens. Real aliens who have invaded our planet in the form of school children and a hamster. They have a mission to complete: to convince 3,140,001 kids to BE SPHDZ... moreFrom the National Ambassador of Young People's Literature, comes the spaciest middle grade series this side of earth.  BE SPHDZ.Michael K. just started fifth grade at a new school. As if that wasn't hard enough, the kids he seems to have made friends with apparently aren't kids at all. They are aliens. Real aliens who have invaded our planet in the form of school children and a hamster. They have a mission to complete: to convince 3,140,001 kids to BE SPHDZ.But with a hamster as their leader, "kids" who talk like walking advertisements, and Michael K as their first convert, will the SPHDZ be able to keep their cover and pull off their assignment? less

The campaign is going well. The SPHDZ word is getting out. 1000's of kids have signed up to say they are SPHDZ. But things haven't gotten any easier for Michael K. The SPHDZ are still trying to blend in to our Earth culture, but not very successfully. They're still mixing up Thanksgiving, cartoon plots, holidays, and commercials. This makes it especially hard for Michael K. to both hide the SPHDZ from Agent Umber and accomplish the SPHDZ Mission... moreThe campaign is going well. The SPHDZ word is getting out. 1000's of kids have signed up to say they are SPHDZ. But things haven't gotten any easier for Michael K. The SPHDZ are still trying to blend in to our Earth culture, but not very successfully. They're still mixing up Thanksgiving, cartoon plots, holidays, and commercials. This makes it especially hard for Michael K. to both hide the SPHDZ from Agent Umber and accomplish the SPHDZ Mission. He's forced to enlist the help of fellow fifth graders, Venus and TJ. When they (Michael K. and the SPHDZ) are given the assignment to write and perform the school play, Umber thinks he's closing in on the aliens...the kindergartners playing the turkeys. less

We're close to 3.14 million SPHDZ, but there is still a lot to be done. Michael K., Venus, TJ, and the SPHDZ are working hard to keep kids signing up to be Spaceheadz. But Agent Umber of the AAA (Anti Alien Agency) is relentless and the unseen leader of Spaceheadz turns out not to be who anyone expected! Full of twists and turns, the third book in the out of this world series continues. And a bigger mystery is about to be revealed!