This is Nathan Keating, a D-Backs fan who is as faithful as he is persistent as he is drunk.
A drunk Keating (painted from the waist up in the home team's color, Sedona red) was tossed from the stadium for cursing at other fans during the D-Backs 3-1 win over the Cubs on Saturday. After initially leaving the ballpark without being charged, Keating, 22, returned to the stadium grounds where he was arrested [and] charged with misdemeanor trespassing.
He was also charged with one count of "caring about the D-Backs enough to paint your torso," which carries a penalty of lifelong ridicule.
(Wait a second, Nate Keating? Isn't he the kicker for the Chargers?)