Speed Demon was one of the villains of The Flash. He was a supervillain who used extreme speed and had once appeared in the story of The Flash. As for the background and abilities of the Speed Demon, further information was needed to confirm it.
The top speed of The Flash in comics varies depending on the storyline and writer's imagination. But generally, it's incredibly fast, beyond what we can easily measure.
The comic book Flash is extremely fast. His speed is often depicted as being able to outrun anything and anyone. It's a major part of his character's power and what makes him so unique and exciting in the comics.
No, The Flash doesn't reach the speed of light in Superman comic #709. His speed is usually depicted within a certain range that doesn't quite match the speed of light.
A super wide-angle lens was a type of photographic lens that had a wide angle of view and a see-through effect. It could help photographers capture a wider field of view in narrow indoor environments or capture more elements when shooting outdoors. One of the characteristics of an ultra-wide-angle lens was that it had a wide angle. For example, when using a 24mm lens to shoot a window, the edge of the window could not be captured, while using a 16mm ultra-wide-angle lens could completely present the entire window in the picture. In addition, the super wide-angle lens could also create different visual effects by shooting from above and below. For example, shooting from above could make the object appear taller and majestic, while shooting from above could enhance the depth and layering of the picture. Super wide-angle lenses were widely used in photography of scenery, architecture, and various other subjects.
Yes, Barry Allen often demonstrates speed thinking in comics. It's one of his superpowers that helps him process information and make decisions at superhuman speeds.
There might be a forgotten or background character from the original series who is given super speed in the fanfiction. For example, Neville Longbottom could be an interesting choice. His growth throughout the original series could be further enhanced with super speed. He could use it to protect his friends and Hogwarts in unexpected ways, becoming a hero in a different sense compared to his original character arc.
In this fanfiction, it might be that an enemy has found a way to manipulate the Speed Force to harm the Flash. For example, they could be using some sort of device that alters the nature of the Speed Force in the Flash's vicinity. So, the Flash has to not only deal with the pain but also figure out who is behind this and stop them before the damage becomes irreversible.