Hawkeye

Hawkeye AKA Clint Barton is a Secondary Protagonist in the LCU

S.H.I.E.L.D.
Hawkeye was the first agent of the  Supreme Headquarters, International Espionage, Law-enforcement Division (S.H.I.E.L.D. for short).

Robin's Injury
Hawkeye was present at the Secret Wayne Expo and is seen rushing to the hospital with the others after Robin gets shot. He tells Batman saying his name over and over again will not wake Robin up but he is ignored.