At first, it might be a bit rocky. Spiderman is used to his own way of doing things, and Batman has very strict rules. But over time, they would start to respect each other. Spiderman would learn from Batman's detective skills, and Batman would come to appreciate Spiderman's agility and quick thinking.
In a dark Gotham alley, Batman is on patrol when a strange web shoots across his path. Out of the shadows emerges Spider - Man. 'Hey, Bats! Heard this city could use some help.' Batman, initially cautious, realizes they could work together. They team up to take on a new villain who has a blend of high - tech gadgets and super - strength. Spider - Man's quips lighten the mood as Batman strategizes. Together, they swing and glide through Gotham, finally defeating the bad guy.
Spiderman is Marvel, no doubt about it. He's got that classic Marvel charm and his storylines are deeply integrated into the larger Marvel comic universe.
It's hard to give an exact age as it depends on the specific storyline and continuity. But generally, Spiderman was likely in his early to mid-twenties in the 1990 comic.