Cast[edit]

The Game World[edit]

• Dwayne Johnson as Dr. Smolder Bravestone: Eddie's avatar (formerly Spencer's); a strong, confident archaeologist, explorer, and the leader of the team; his only weakness is now a man named Switchblade.
  • Johnson also portrays Bravestone's father during a cutscene flashback.
  • Zachary Tzegaegbe as a young Smolder Bravestone
• Jack Black as Professor Sheldon "Shelly" Oberon: Fridge's avatar (formerly Bethany's); a paleontologist, archaeologist, cartographer, cryptographer and now a geometrician, with a weakness for endurance and new weakness for heat, sun, and sand.
• Kevin Hart as Franklin "Mouse" Finbar: Milo's avatar (formerly Fridge's); a diminutive zoologist, weapons specialist and currently linguist, who has a weakness to cake and with the lack of speed and strength.
• Karen Gillan as Ruby Roundhouse: Martha's avatar; a commando with talents in martial arts and is now able to wield nunchucks while still having a weakness to venom.
• Nick Jonas as Jefferson "Seaplane" McDonough: Alex's avatar; a young aircraft pilot who has a weakness to mosquitoes.
• Awkwafina as Ming Fleetfoot: Spencer's avatar; a new avatar with skills of burglary, pick-pocketing and lock picking who has a weakness to pollen.
• Rhys Darby as Nigel Billingsley: The players' main in-game NPC (Non-Player Character) guide.
• Rory McCann as Jurgen the Brutal: The new villain of Jumanji, an iron-fisted and arrogant warlord who killed Smolder Bravestone's parents a long time ago. He is shown to have a weakness to the Jumanji Berry.
• John Ross Bowie as Jurgen's spokesperson: A minion of Jurgen.
• Dania Ramirez as Flame: An NPC seductress and Bravestone's ex-girlfriend.
• Massi Furlan as Switchblade: A man who is the latest weakness of Bravestone.
• Jennifer Patino as Bravestone's mother: The unnamed mother of Bravestone who dies during a cutscene flashback.

The Real World[edit]

• Danny DeVito as Eddie Gilpin: Spencer's cranky, but well-meaning grandfather.
• Danny Glover as Milo Walker: Eddie's estranged friend.
• Ser'Darius Blain as Anthony "Fridge" Johnson: A Brantford High School football jock, who cares more about football than studying. He and Spencer, who were childhood friends, reconciled by the end of the previous film after years of disassociation. His experience as Franklin "Mouse" Finbar in Jumanji helped him learn to rely on others and his brain rather than brawn.
• Morgan Turner as Martha Kaply: A shy and cynical intellectual at Brantford High School. She and Spencer started a romantic relationship at the end of Welcome to the Jungle. Her experience as Ruby Roundhouse in Jumanji helped her learn to not be judgmental and to be more self-confident.
• Colin Hanks as Alex Vreeke: a married man with children, who, as a teenage gamer, was trapped inside the Jumanji video game for twenty years until he was rescued and returned to the real world. In the video game, he took shelter in a home built by a previous player named Alan Parrish.
• Alex Wolff as Spencer Gilpin: A nerdy student at Brantford High School who is Eddie's grandson; his previous experience as Smolder Bravestone in Jumanji helped him cope with anxiety and panphobia and to develop assertiveness. Spencer rebuilt Jumanji after Fridge had destroyed it. He then gets sucked into the game for a second time, and his friends, grandfather, and his grandfather's friend follow with a plan to rescue him.
• Madison Iseman as Bethany Walker: A pretty, popular, egocentric teenage girl at Brantford High School. Her first experience as Sheldon Oberon in Jumanji helped her learn to care more about others.
• Marin Hinkle as Mrs. Gilpin: The mother of Spencer.
• Bebe Neuwirth as Nora Shepherd: A kindly restaurateur whom Eddie despises due to her buying the diner that he and Milo previously owned. She previously appeared as Peter and Judy's aunt in the first film, where she once wanted to turn the Parrish mansion into a bed and breakfast business.^[5]