Marilyn Farquaad was soon after enrolled into a fencing class, and he faced many opponents to strengthen his skill and prepare him for the job of rescuing the princess whose name was still a mystery.
Prince Charming, on the other hand, was enrolled into a fencing class several years later; not because he was preparing to rescue a princess, but because he wanted to feel powerful like his mother; who believed he did not need to work very hard because he was attractive. This left him highly unprepared, and thus, the princess he sought was already long gone by the time he arrived.
But it wasn't a happy ending for Marilyn, either. He lost his bride to the rot-munching ogre whose neck he risked for his own benefit. But after his parents passed, he had inherited Duloc, and threatened his people: Anyone who calls me anything other than Lord Farquaad will quickly find themselves at the mercy of my blade!
He also had his face painted nice and big on the floor of his courtyard. Although he knew there were many who disapproved of his leadership, nobody ever dared to call him by his first name, and so, because of that, he spared them.
And as for King Harold; the Fairy Godmother had later learned of his betrayal, and cursed him; making his frog form not only the form he would take when he lied, but also the form he would take after death. In that form, he would live, until he died again, once and for all. But, while he had betrayed the Fairy Godmother, he did not regret his actions, for they were a good chunk of how Shrek and Fiona met.
But he never told her this. Not even when they were at great odds over the fact that her curse had been lifted by an ogre.
A hero, after all, never asks for praise. He just sits quietly by, waiting for a chance to rise again.