It is commonly believed that Hypno are a pokemon capable of total mind control, one so complete that the human possessed might as well be a robot or a video game character. This belief is so wide-ranging that murderers have successfully used Hypno possession as a defense and espionage agencies have funded vast amounts of research into the targeted use of Hypno to win wars or assassinate opposition leaders. It is also almost entirely wrong.
The reality of Hypno possession is far more modest. People possessed by Hypno move with a sluggish gait and a hunched-over posture, and their eyes – not the irises, but the entire eyes – glow a light blue similar to that of many psychic pokemon when engaging in the use of their powers. It is only the weak-minded who can be possessed, and even they can not be driven to do things contrary to their own nature, such as harming the people they love.
While Hypno are occasionally used for kidnapping in this manner and other nefarious deeds (for while Hypno can be resisted, there are always those who will blame Hypno possession for things they would have done at the first excuse anyway) the most common usage is far more benign. It is not uncommon for a person to spend one moment staring into a Hypno's pendant, then awaken hours later to find that they had cleaned a park or repaired a house or cooked meals for the homeless. Perhaps Hypno, for all their reputation, are good-hearted after all, or perhaps it is humans who are the good-hearted ones.