Bob, an American ninja, regularly hangs out with Pierre, a French ninja; Olaf, a Swedish ninja; Omar, an Egyptian ninja; and Wallace, an Australian ninja.
Bob is a conservative, beer-drinking, all-American Good Ol' Boy from Texas who wears a ninja suit, speaks both English and Japanese, quotes eastern philosophy, carries a ninjato and shurikens, and lives in a traditional Japanese-style house. In Texas.
Obo is an alien ninja from District 92 of the 35th Line City from Eemorykah.
BOB is a robot ninja made in a Russian test lab in the U.S.A.
Bawb is a mutant ninja that comes from another dimension.