User blog comment:Sifter66/Who is the most Underused/Underpowered Champion?/@comment-2112140-20130114181047

For the underused champions I'd say there is Poppy, Sejuani, Karma, Viktor.

For the underpowered champions I'd say Karma

Reasons:

Poppy- Item dependant anti-carry who can carry herself, has amazing stats and passive but terrible farming potential and mana problems also can be kited.

Sejuani: She isn't really bad, she is sometimes used in higher ELO(but not really much), she offers a good amount of CC and can lockdown an opponent quite well (Though with E on CD its much harder)

Karma: While Karma is a much more rare champion you'd see, her only role is mid which she doesn't do well as much as other midlaners. For a support her item dependancy tends to bother most players.

Viktor: This champion is not really very bad, people think he is terrible but he isn't. One person on this thread said his passive costs too much, well if you do want to buy the passive earlier then yes it does stop you from building more effective items (such as Rylais or Liandry's) His CC is reliable if you use Gravity Augment, while you lose on the movespeed of power augment and the burst of death augment you do get an AoE slow/stun that is only dodgable if you're on the outer edges. Very difficult and good if you play him well, what I see people do with him is most of the time build heavy AP burst items and Rod of Ages. I find an AP build with Resistances quite good, I don't get the Augment:Gravity but I don't even need it after I get Rylais. I won't post the build though (you can understand I use Rylais) since it's a build I like to use on Viktor.