Uhm, this could be a better thread without King Oberon question, not because it's so difficult to find his redeeming qualities but because it's been so long since most of us watched SAO and he's not exactly the most memorable anime character. Guess I'll give it a go irregardless.
King Oberon:
1. Most likely has a well paid job and earns a ton of cash.
2. Lives in Japan which is definitely a plus in my books.
3. He's quite tall (according to SAO wikia) which is a plus when it comes to getting the ladies.
4. Wears glasses, all megane-lovers will know why that's a plus.
5. Is essentially another victim at Kayaba's expense having failed to live up to his (Kayaba's and therefor his personal) standards.
Kamina (most likely my favorite anime character):
1. Is reckless.
2. Wears sunglasses indoors.
3. Is a pervert.
4. Is really naive (referring to the same episode/couple of episodes)
5. Pretty much ruined rest of the anime since Simon never really surpassed him (In my opinion at least).
Clannad:
1. Sunohara.
2. Female characters that almost seem to disappear after their stories have been told.
3. Overly used soundtrack. Clannad has great OST but it seems forced more often than not, there's some sort of music in every single scene.
4. Slow start. I believe that I've dropped Clannad around episode 6 since it didn't seem to be going anywhere.
5. Kinda bs ending.
Honestly I don't remember any particularly bad anime that I've watched, or rather I've pretty much forgot everything about the ones that I did... ^^''
This one was really difficult to reply to.