The team allows Ernest Koenig (guest star Patton Oswalt) aboard the Zephyr, and his mind is immediately blown. Meanwhile, Mack (Henry Simmons) and Deke (Jeff Ward) try to explain to Freddy Malick (guest star Darren Barnet) their reasons for protecting him. From 'Know Your Onions,' season 7, episode 2 of Marvel's Agents of S.H.I.E.L.D. Watch Marvel's Agents of S.H.I.E.L.D. WEDNESDAY 10|9c on ABC, streaming, on demand, and Hulu.