The girl next door is instantly transformed into a drop-dead gorgeous bombshell. Can she embrace her new look and still stay true to herself?
~ Jumanji movie website[1]

Ruby Roundhouse is one of the five selectable playable character in Jumanji's video game form that appears in Jumanji: Welcome to the Jungle.

She is the avatar of Martha Kaply.


Ruby Roundhouse is described as a killer of men.


  • Karate: She is an expert in karate.
  • Tai'Chi: She is an expert in tai'chi.
  • Aikido: She is an expert in aikido.
  • Dance Fighting: This ability is activated whenever the song, "Oh Baby I Love Your Way" plays.


  • Venom: Venom is instantly fatal to her.




  • Ruby Roundhouse is a parody of video game heroine, Lara Croft of the Tomb Raider series.
    • Her weakness of snake venom is a homage to the character and film series of Indiana Jones, who also inspired the character of Lara Croft, Smolder Bravestone (even wearing a fedora hat in concept photos) and the cinematic adventure feel of the movie. Near the end of the movie, Ruby actually used her weakness to her strategic advantage when she was cornered by Russel Van Pelt.
  • Her ability of "Dance Fighting" is somewhat misleading, the martial art Capoeira is often referred to as dance fighting, while Roundhouse's ability is just fighting to music.


  1. Official Website