"Mintrel could be the most deadly threat we ever faced," said Batman shortly after Minstrel made his pressence known in Gotham. Indeed, he was holding many of Gotham City's wealthy ransom with threats to sink the Gotham Stock Exchange if he wasn't given $1,000 per week from each of its members.
What made him so dangerous was he possessed a "level of electronic sophistication far beyond anyone else in the world" at that time. He was an electronic genius which was in fact a logical pursuit for someone who was also highly talented in music. You see, both music and electronic energy are transmitted in waves.
Minstrel used his musical talents to deliver his demands and taunts to Gotham's citizens, police force and protectors over the air waves. With rhyming lyrics he would communicate his villainous intents accompanied by soft strumming on a lute. In addition, he has the peculiar habit of rolling his 'r's.
Not only was he a evil mastermind, but also a strikingly handsome man who possessed a winning charm. Many of Gotham City's women were swooned by his personality and warm, attractive singing voice. Harriet Cooper, Aunt to Bruce Wayne's youthful ward Dick Grayson, was one such woman. When his female partner in crime, Octavia, remarked Batman too had a warm, attractive voice, Minstel was incredulous. He could not understand how Octavia could be fooled by what he called Batman's "phony mystique". Later on, he called Batman and Robin "inefficient".
Though he appeared to be in great physical shape, he abhored violence, refusing to indulge in fisticuffs or brawling. When he was finally captured by Batman and Robin, his men defeated, he went peacefully into police custody. He did, however, promise a jailbreak in a song composed for a television interview.
The Minstrel Has Never Appeared In Any Other Form Of Media