The Counter is a burger chain that surprisingly has great options for vegans. Their vegan veggie burger is made in house and is quite good - it has rice, beans, corn, and a variety of other whole foods in it. It is one of my favorite burgers I've ever had.
At the counter you pick what type of patty you would like and you pick which toppings you would like. I always have my patty over a bed of lettuce rather than on a bun and choose the other lettuce options as toppings. Here you can find a list of what toppings, sauces, etc. are vegan, gluten-free, etc. In addition to the main course, I like to get sweet potato fries with BBQ sauce. many of the dipping sauces are not vegan but the wait staff is very knowledgable if you have not checked out the dietary guidelines before hand.
If you're ever looking for a place to go where meat lovers and vegans will both enjoy their meal I'd highly recommend The Counter!