Whereas the other thread is just for generalized discussion on the Sengoku-Jidai period, I figured I'd make this one for Sengoku fans just to discuss the different characters of the era, and list whatever ones are their favorite. For me...
1.) Otani Yoshitsugu: Was a leper, gradually began to lose his vision (but never completely lost it), and suffered from all sorts of maladies. Despite this, he was one of the best commanders at Sekigahara on the Western side, and even had predicted Kobayakawa Hideaki's betrayal in advance.
2.) Ishida Mitsunari: I have a soft spot for him, because I like his scheming nature and think that he was a good commander, despite what other texts say. His loss at Sekigahara was caused by the inactivity of many Western army units; the way he positioned the generals at Sekigahara was actually brilliant, and the Western Army could have won the battle had many officers not defected/did more to help the main core of the Western Army in the fighting.
3.) Date Masamune: Brilliant daimyo with an interesting personality. He also severed his eye, and was a pretty good commander. I also like how he was a patron of the arts and funded the Date Maru expedition.
4.) Uesugi Kenshin: Also an interesting man. He definitely was unique for his times. He didn't have any kids, was dedicated to living a somewhat monkish life, and increased his power effectively through both military campaigns and domestic affairs. If he had lived longer, the Uesugi would have put up a better fight against the Oda [because they would have been more united].
5.) Ryuuzoji Takanobu: Don't know why I like him, but I do. I guess I just love to conjure an image up of a fat man in a bear suit terrorizing the people of Kyushu (he was called the Bear of HIzen). In all seriousness though, I think he was a decent general, and think that the loss he suffered at Okitanawate wasn't so much his fault as it was the fault of nature and the senility he had developed with time.