I recently found this promotional video for Ant-Man, posted by what I believe to be the offical YouTube channel for Disney Japan, a hilarious but very odd song and dance. Being as it is Japanese, I initially passed it off as "just one of those Japanese things" and let it be.
However, since then I have found other videos with these same two people, dancing to the same song with different lyrics. For one example, please see this video, or this video where you can see a talk show of some kind talking about them.
Unfortunately, I have no idea who these people are, and being unable to speak Japansese I am completely incapable of doing any research into it.
Who are these two people, how is this promotional material for Ant-Man, and what on Earth is going on?