Batman Family#16(1978)

When a mysterious criminal disguised as a lumberjack strikes in New Carthage, Robin is joined by Harlequin and together they stop the criminal, although they fail to capture him. In the same fashion, Batgirl stops a criminal on a train, which is being used as a decoy to transport a convict. Commissioner Gordon and the Gotham City Police Department are also present when Batgirl stops the criminal, who is disguised as a special G.I. Soldier. Despite being outnumbered and defeated, the criminal manages to escape. The next day, Dick Grayson and Lori Elton visit Barbara Gordon and her father on her apartment in Washington, D.C. While they watch the TV, they notice another criminal on a red costume attacking a beauty contest. The criminal is confronted and stopped by Betty Kane, the original Bat-Girl, but Dick and Barbara notice a similar pattern in the criminals' modus operandi. They both deduce that it is the same criminal that they failed to capture on previous occassions and they prepare a trap to capture the criminal once and for all. Using a few clues they found about the criminal, Batgirl and Robin track the man to his apartment and confront him, finally ending his evil scheme which consisted on attacking government officials while operating under different names, with different costumes and weapons. In the aftermath, Batgirl and Robin share a burger while doing their usual flirtatious routine.