The Batman Signal, or Bat-Signal, originated in the Detective Comics series as a way for the Gotham City Police Department to summon Batman. In the digital age, it has evolved into a versatile meme template used to 'call out' specific groups, request help for niche problems, or signal the arrival of a 'hero.' Whether it's a desperate cry for IT support or a funny way to announce a specific hobbyist's arrival, the glowing bat silhouette against the dark clouds remains a universal symbol of summons and necessity.