Envision a realistic and futuristic version of a character inspired by the essence of a night-themed vigilante, akin to Nightwing from DC Comics. The character should be displayed in a full-body portrait orientation, wearing a tactical suit that's fit for urban stealth and acrobatics. The suit would have a sleek design with a color palette that blends into the night, such as dark blues or blacks, possibly with subtle reflective or glowing accents for a high-tech look. The character's posture should be agile and dynamic, indicative of their expertise in combat and acrobatics. The background might suggest a modern cityscape at night, highlighting their role as a guardian of the urban environment. The overall design should convey the character's athleticism and their advanced technology-enhanced crime-fighting abilities.