<Li> Colin Hanks as Adult Alex Vreeke </Li> <Li> Nick Jonas as Jefferson "Seaplane" McDonough, Alex Vreeke's avatar . McDonough is a mysterious guide, adventurer, and pilot in the game, who waits for and joins the other avatars as they attempt to escape Jumanji . McDonough's strengths are piloting and making margaritas that "Mouse" / "Fridge" takes a liking to . His only weakness is mosquito bites, which is bad for him and all the more ironic since the jungle, being a tropical one, is teeming with mosquitoes . He is credited as "Alex". During his twenty - year absence, he lives in a treehouse built and once occupied by Alan Parrish (previously portrayed by Robin Williams and Adam Hann - Byrd in the 1995 film Jumanji). </Li> <Ul> <Li> Bobby Cannavale as Russel Van Pelt, a corrupt explorer seeking to control the "Jaguar's Eye", whose power he is demonically possessed by . He is the boss of the film's video game scenario; Jonathan Hyde played a different version of Van Pelt in the 1995 film . </Li> <Li> NPCs in the game include: <Ul> <Li> Rhys Darby as Nigel Billingsley, the main guide in the game . </Li> <Li> William Tokarsky as an NPC food trader at the place of his name in the credits: Bread / Cake vendor . </Li> <Li> Rohan Chand as the boy at Bazaar, a young NPC guide who leads Spencer, Fridge, Martha, and Bethany to the black mamba's basket, which has the next clue . </Li> </Ul> </Li> </Ul> <Li> Bobby Cannavale as Russel Van Pelt, a corrupt explorer seeking to control the "Jaguar's Eye", whose power he is demonically possessed by . He is the boss of the film's video game scenario; Jonathan Hyde played a different version of Van Pelt in the 1995 film . </Li>

Who plays the bad guy in the new jumanji movie