Bruce Banner is still alive in the comics. His storylines have many ups and downs, but death hasn't been the ultimate fate for him. He keeps coming back stronger.
Bruce Banner's age in the comics isn't fixed. It can range from his 30s to 50s, depending on the creative direction of each comic series and story arc.
In fanfiction, Bruce is often portrayed as the brains behind many of the Avengers' strategies. His scientific knowledge is invaluable. At the same time, his struggle with the Hulk can be a source of both drama and humor. For instance, there might be scenes where he accidentally turns into the Hulk at the wrong moment, creating chaos but also a chance for him to show his strength.
Perhaps in a fanfiction, Bruce Banner discovers a new form of science that can enhance Thor's powers even more. Thor, in turn, helps Bruce understand the Asgardian view of the universe, which gives Bruce new insights into his own work. This could lead to a series of events where they team up against a common enemy that is a threat to both Earth and Asgard.
Definitely. Bruce Banner's transformation into the Hulk was the starting point of the entire concept. The comic storylines have always centered around this original transformation and its consequences.
Loki may also kidnap Bruce Banner as a way to get at the Avengers. Since Banner is an important part of the team, taking him hostage could be a strategic move to draw out the other Avengers and then manipulate or defeat them. It could be part of a bigger scheme to gain power or control over Earth or the universe.
At first, Bruce might be scared. He knows Loki's reputation for being unpredictable and dangerous. But he also tries to keep his cool because he doesn't want to accidentally transform into the Hulk right away. He might try to reason with Loki, using his intelligence to talk his way out of the situation.