BioWare's Mass Effect series is approaching a decade and a half since it first began, and it's just as beloved as ever. With four mainline entries and another on the way, fans have had lots of opportunities to explore the vast world of Mass Effect and encounter the many different aliens that inhabit it, and hopefully Mass Effect 4 will offer just as many great characters as its predecessors. The upcoming Mass Effect 4 is still a bit of a mystery, and despite some veiled comments, tantalizingly mysterious images, and a teaser trailer, fans are mostly none-the-wiser when it comes to what the next game will be.