Web comic aggregator RSS feed general questions?

I am trying to create a web comic aggregation website using HTML 5, CSS 3, and JavaScript. I would like users to be able to view comics of different dates from different websites all in one place. After some research, it seems like I'm probably going to need to use an RSS feed to accomplish this. However, I don't fully understand the capabilities and usage of an RSS feed.

First, would it be possible to pull images from comic websites in an automated and orderly fashion using an RSS feed? Or would I need to use something else? Or would it not be possible at all? If it is possible with an RSS feed, I'm also confused somewhat about the general implementation. Would the code for the feed be in HTML, or JavaScript, or both? Would I need to use existing libraries and or APIs? Is their existing code with a similar enough function that I could use it as a starting point?

Thanks