Netflix's Physical: 100 Season 2 Underground airs on March 19 and the first round of contestants have been revealed. The Netflix K-content Instagram account shared the lineup of "Group 1: The Warriors" this morning (Feb 22), adding: "Survival is everyday life for these tried-and-tested combatants, including martial artist Kim Dong-hyun and season 1 contestant and former firefighter Hong Beom-seok.".