Manoo was an alien law officer who came to Earth looking for an escaped criminal of his own race. The criminal had unfortunately already encountered a local Earthman and convinced him that he, the criminal, was the lawman and that Manoo was the criminal. The criminal tried to get the Earthling to kill Manoo but when the Earthling had no heart for the murder he and Manoo swapped stories. For helping Manoo catch his fugitive, the Earthling was rewarded with a gemstone.
Manoo was created by Stan Lee
and Jack Kirby
in 1961 and first appeared in Amazing Adventures