Due to Sony owning the rights to Spider-Man, we wont get to see the ol web head in The Avengers anytime soon. Marvel Studios do however have the rights to Spider-Woman. The first Spider-Woman, Jessica Drew, was a S.H.I.E.L.D. agent. Her powers differ from those of her male counterpart. In addition to enhanced strength, speed and hearing and the ability to adhere to walls, she can emit mood-altering pheromones that attract men and repulse women, fire bio-electric energy venom blasts and glide using wings. In her early years, Drew worked as a HYDRA agent fighting against S.H.I.E.L.D. After learning HYDRA's true nature, she left and began a search to find her father's killer. After finding her father's killer, she worked as a bounty hunter, then a private investigator before returning to HYDRA as a double agent for S.H.I.E.L.D. During her time as a private investigator, it was thought that her mother may be Viper of HYDRA. Drew's abilities and her connections with HYDRA could make for a very interesting S.H.I.E.L.D. agent, and some interesting team dynamics.
An ordinary guy who is loving seeing his favourite superheroes being brought to life on the big and small screens, and is hopeful that the best is yet to come.