Dedede was born on a fat camp, which led to his hugeness. His parents abandoned him deep in Whispy woods. He was raised by a flock of waddle dees,(Which is why he trusts them as henchmen)who happened to find him while on an afternoon stroll. He became super spoiled super fast, and demanded everything he wanted, and unfortunately he got it all, thats why he became a very greedy king, who doesnt care about his subjects or minions at all. Thats why hes the greedy fatass he is today.