Blessed Misfortune! (1989)

A creature bearing the ominous name "Mishap" is hot in pursuit of an unfortunate lumberjack and eventually decides to live with him. It soon gets bored, however, and asks the lumberjack to hand it over to the rich merchant Habermoos. Habermoos manages to sell Mishap to the king, although he is being attacked by robbers. The king is bankrupt and threatened with war by other countries. Young Michael has to go to war for the king. The creature tries to secretly join him. When Michael gets hold of the situation, he manages to get rid of Mishap once and for all. After all, he has more important things to do. At the last moment, he prevents his girlfriend Kathrin from getting married to the pompous merchant Habermoos.

Unfortunately the movie Blessed Misfortune! is not yet available on HBO Max.