Mark Rober is an American engineer and YouTuber who makes popular-science and gadget-building videos. He spent nine years at NASA's Jet Propulsion Laboratory, most of them working on the Curiosity Mars rover, and four years afterwards as a product designer at Apple. His videos apply that engineering background to elaborate one-off builds.
Airrack is the online name of Eric Decker, an American YouTuber known for challenge and prank videos. He drew attention for reaching a million subscribers within a year of starting, and has since co-founded Creator Now, an education programme for people making online content.
Casey Neistat is an American filmmaker and YouTuber known for daily vlogging, a format he helped establish on the platform. He co-founded the video app Beme, later acquired by CNN, and in 2018 opened 368, a shared studio space where creators could work together.
Corpse Husband is an American musician and former YouTuber who has never shown his face publicly. He first drew an audience narrating horror stories, then reached a much wider one through Among Us streams during the game's surge in popularity. His unusually deep voice became his most recognisable trait.
DanTDM is the online name of Daniel Middleton, an English YouTuber, game commentator and author. He started his channel in 2012 as TheDiamondMinecart, built it on Let's Play videos aimed largely at younger viewers, and is among the most-subscribed creators in Britain.
David Dobrik is a Slovak-American YouTuber and vlogger who first built an audience on Vine before launching his YouTube channel in 2015. He is the central figure in the Vlog Squad, the rotating group of friends who appear throughout his videos, and his vlog channel grew into one of the most-watched creator channels on the platform. He has also worked in mainstream television, judging Nickelodeon's America's Most Musical Family and hosting Discovery's Dodgeball Thunderdome.
Druski is the stage name of Drew Desbordes, an American comedian, actor and influencer. He is known for character-driven sketch comedy and for Coulda Been Records, the mock record label he built a series around. He has also appeared in music videos alongside artists including Drake and Jack Harlow.