Ranboo

Rambo is a surname with Norwegian (Vestfold) and Swedish origins. It possibly originated with ramn + bo, meaning “raven’s nest”. It has variants in French (Rambeau and Rimbaud) and German (Rambow). It is now best known from the Rambo franchise, whose protagonist was known simply as “Rambo” in the novel that inspired it, First Blood (1972), and then as John Rambo in the film series.

https://en.wikipedia.org/wiki/Rambo