Mock Comic Book Cover Characters

"Holy boring content Batman!!  This info needs some Ka-ZING!!!"    A company that specializes in increasing customer's ease and happiness when dealing with computer-generated voice prompts wanted to make their services more accessible so they came up with the idea of creating super heroes and villains to represent the different aspects of their product.  Normally, the program of choice for nice vintage textures and tones would have been Photoshop but my client requested that all art be done in vector.   The problem with vector is that it can come out cold, stiff, and plastic unless you're REALLY good at it.   So, like any good super-hero-artist-want-to-be, I flew off to the internet to do some quick online tutorials, grabbed TONS of classic comic book reference, and began cranking these babies out: