<Li> Mason Guccione as Alex Vreeke, a teenage boy who played, and was trapped inside, the Jumanji video game for 20 years . He is credited as "Young Alex". <Ul> <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> <Ul> <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> 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>

Who played the older alex in the new jumanji movie