How to play StarCraft 2 Coop missions alone

StarCraft 2 is a well-known Real-Time Strategy (RTS) game. It features campaigns, skirmishes (alone or with other players), PVP matches and Coop missions. These are missions that have to be played with a selected Coop Commander. A unit representing a distinguished play-style, also gaining more abilities and/or useable units as the Commanders levels up. The problem The problem? Coop missions can ONLY be played in multiplayer with another player. And lately I wanted to play a few coop missions but found no other players. The player queue was completely empty. Given that StarCraft 2 was released in July 2010 this isn't surprising, as the coop part was never StarCrafts most beloved part. Yet Blizzard offered Coop Commanders for money, which players could buy. And I bought one (my beloved Mengsk) and not being able to play with something I bought didn't sit well with me. I googled if there was any way to play StarCraft 2 coop missions alone. The solution which came instantly to my mind…