Thank you for all your work on compiling the storylines Ome. 
Yikes this is not an easy one either as I love most of the characters. But the one that annoyed me the most is on top of my list:
1. Mark Graison (that moustache and stealing Pam away from Bobby!)
2. Rose McKay (She was so mismatched with Mack and trashy)
3. Laurel Ellis (Clayton being smitten with her was so annoying)
4. Jeannie O'Brien (bad Pam replacement, the storyline where Bobby ran after her was so stupid!)
5. Tommy McKay (he was a bad boy that did drugs and beat up on women)
6. Mrs. Scotfield (she made them lose Ewing Oil)
7. Carter McKay (his face went all red when he was upset it made me laugh rather than feel bad for him)
8. Holly Harwood (I hated how she ruined JR & Sue Ellen's marriage for the second time and drove Sue Ellen back to the bottle. It killed Mickey!)
9. Andrew Dowling (How could Donna leave Ray for him?)
10. Peter Richards (He was cute but a total mismatch for Sue Ellen!)
Yikes this is not an easy one either as I love most of the characters. But the one that annoyed me the most is on top of my list:
1. Mark Graison (that moustache and stealing Pam away from Bobby!)
2. Rose McKay (She was so mismatched with Mack and trashy)
3. Laurel Ellis (Clayton being smitten with her was so annoying)
4. Jeannie O'Brien (bad Pam replacement, the storyline where Bobby ran after her was so stupid!)
5. Tommy McKay (he was a bad boy that did drugs and beat up on women)
6. Mrs. Scotfield (she made them lose Ewing Oil)
7. Carter McKay (his face went all red when he was upset it made me laugh rather than feel bad for him)
8. Holly Harwood (I hated how she ruined JR & Sue Ellen's marriage for the second time and drove Sue Ellen back to the bottle. It killed Mickey!)
9. Andrew Dowling (How could Donna leave Ray for him?)
10. Peter Richards (He was cute but a total mismatch for Sue Ellen!)