The best thing Marvel could have done with their marketing campaign for Ant-Man, a third-tier character with precious little public name recognition, is inform people that the character is associated with The Avengers. They did it damn well by perching him on Iron Man's shoulder. The poster's tagline lays questions of why we should care about Ant-Man to rest; "No Shield. No Armour. No Problem" is one of the best taglines Feige and his team have come up with yet.