ALA Booklist (Thu Sep 01 00:00:00 CDT 2016)

In this third installment, Gina has been sucked into a portal, and D.J. and his robot friend Hilo follow her through in an attempt to rescue her. Landing on a distant planet, the three are reunited with warrior cat Polly, who involves them in a clan war between the magical Furbacks and the unmagical Scale Tails, who may be as dumb as the rocks they eat. Throughout their adventure, Hilo remembers more and more of his past and the function he was created to perform. Winick's art is cartoonish, with vibrant colors and imaginative settings that bring the alien worlds to life. The multicultural cast of characters is as convincing as the slapstick humor is funny. The volume ends with a satisfying answer to one of the series' biggest mysteries, setting the reader up nicely for the next story arc.

Horn Book (Tue Aug 01 00:00:00 CDT 2017)

Color by Steve Hamaker. Hilo (an amnesiac robot boy from another dimension) and D.J. (his human friend) travel to another world to rescue Gina, who was sucked through a portal at the end of Saving the Whole Wide World. In the third graphic novel, Winick continues to tease out Hilo's past and develop the series arc while delivering a self-contained rollicking adventure full of humor and heart.

Kirkus Reviews

The titular towheaded robot hero returns with his Asian-American best friend, D.J., on another whirlwind adventure—this time to save their African-American friend Gina and, possibly, another world.After thwarting a throng of villainous vegetables and banishing the wicked Razorwark, D.J. and Hilo must now figure out how to get their friend Gina back after she was pulled into another dimension. Drawing on Hilo's vast robot intelligence to find the correct portal that should take them to her, Hilo and D.J. find themselves in the world of their magically gifted feline friend, Polly. After locating Gina, the trio vows to help Polly and her fellow anthropomorphic mammals defeat the Scale Tail Clan—a ruthless group of reptiles and amphibians who came to power with the help of a magical orb. (The Furbacks speak a vaguely country English dialect, while the Scale Tails have a tendency to omit articles and verbs.) During their adventures, Hilo's memory continues to return, including recollections of a sister; but does she still exist? This rousing third volume hasn't lost an iota of the vibrancy, humor, and momentum that's propelled its predecessors. As the story evolves, Hilo's universe grows ever richer and more complex; readers are far from the humdrum world where a lonely D.J. sought to fit in, and the subsequent ride has been one of nonstop thrills and breathtaking imagination. Continually fabulous. (Graphic science fiction. 7-12)

School Library Journal (Sun Jan 01 00:00:00 CST 2017)

Gr 3-5 Hilo the robot boy and his best friend DJ must team up to track down DJ's pal Gina, who was swallowed by a mysterious portal. In the process, Hilo and DJ are reunited with old friends, make new friends, and unearth more secrets from Hilo's past. This third installment in the series delivers humor and cartoony, over-the-top adventures that fans and new readers will delight in. The violence is minimal and more silly than scary. More sophisticated readers will find deeper meaning in Hilo's quest to discover who he is, as well as DJ's attempts to be a good friend and realize what it is he excels at. Full-color artwork on glossy pages completes this bright, cheerful, and just plain fun package. VERDICT This latest in a series that has proven to be a favorite of young readers continues the high standards of the previous volumes. For those who are familiar with the books and newcomers alike. Elizabeth Nicolai, Anchorage Public Library, AK