Thragg

When Thragg reached adulthood and his parents tested his strength, he didn't even pass the test the way everyone else had. He did what was expected of a future regent: he killed his own parents just to prove his power

Now, as a mere soldier of the Viltrumite Empire and future regent, there were certain things he was expected to fulfill, such as taking a wife. This was something a rival empire to Viltrum took advantage of, offering their princess as a candidate, solely as a strategic move to unify both empires

Both were now in the gardens of the young woman's planet, where they were supposed to "get to know each other better"