Why is El Fuerte so disliked?
Here's more about that topic than most people would ever want to read:
http://www.capcom-unity.com/bigmex/blog/2008/07/28/deconstructing_el_fuerte_part_1
http://www.capcom-unity.com/bigmex/blog/2008/07/29/deconstructing_el_fuerte_part_2
http://www.capcom-unity.com/bigmex/blog/2008/07/30/deconstructing_el_fuerte_part_3
http://www.capcom-unity.com/bigmex/blog/2008/07/31/deconstructing_el_fuerte_part_4
http://www.capcom-unity.com/bigmex/blog/2008/08/01/deconstructing_el_fuerte_final_part
As for personal favorites, I have many, but this man hasn't gotten enough acknowledgement in this thread:
Design-wise, everything about him means business, and he's got the scars to show he can survive some pretty rough stuff.
Story-wise, he's the neglected child of a German nobleman. His mother died when he was 15, so then his first order of business was to go all the way to Germany to confront his biological father. He was beaten by his younger half-brother and his superior training, which may have been a driving force behind his training under some of the more respected martial arts masters of his setting (or maybe like Bill from Kill Bill, he was driven to find father figures) although comparing his moves to those masters and their students, he found a way to use their principles but not their exact techniques to come up with a style of his own.
Professionally, he joined the police and manage to get himself promoted to commissioner, while running some shady deals on the side, which would eventually become his main business, but he never really let go of his focus on martial arts, having an arena to his name and organizing tournaments where he scouts for skilled people and techniques.
Somewhere along the line he managed to get married and have a kid, although in his own way he repeated his own history of parental neglect, whose resolution is complete because there's no Garou 2 (yet?) to tell us what's Rock's role in his final will.
Gameplay-wise he's particularly interesting, because he started out as a CPU boss with a simple but effective main technique - he could interrupt your attacks grabbing you out of them while keeping you away with projectiles, which in turn force you to try and attack him up close, which is risky.
When he became playable, he retained this ability, meaning that a good Geese player had to be good at anticipating his opponent's actions.
His more famous super have notoriously complex commands in their original forms (which don't necessarily apply in some of his more recent appearances), which basically force you to put in some deliberate training to pull them off when you want/need them - his Raising Storm being in no small part an anti-air particularly invite s well-trained muscle memory, and his Deadly Rave make you input a command for every hit of its combo, unlike the Ryuuko Ranbu supers from the Art of fighting cast that preceded it, which require only a single initial input.
Geese is not a young man, although physically powerful - he put years into his training, and as a fearsome (CPU) opponent that show - if you wish to master Geese, you must embrace a Geese-like mindset of devotion to your training and of trying to read your opponents to the point where they fear even trying to attack you.
I don't think I'll bother to acknowledge bad characters with even a mention here, "no such thing as bad publicity" and all that.