Nimona by Noelle Stevenson
Nemeses! Dragons! Science! Symbolism!
Nimona is an impulsive young shapeshifter with a knack for villainy. Lord Ballister Blackheart is a villain with a vendetta. As sidekick and supervillain, Nimona and Lord Blackheart are about to wreak some serious havoc. Their mission: prove to the kingdom that Sir Ambrosius Goldenloin and his buddies at the Institution of Law Enforcement and Heroics aren’t the heroes everyone thinks they are.
But as small acts of mischief escalate into a vicious battle, Lord Blackheart realizes that Nimona’s powers are as murky and mysterious as her past. And her unpredictable wild side might be more dangerous than he is willing to admit.
Rating: 
Back in my teenage years when I used to read a lot of webcomics, Nimona was one of those I stumbled upon and would eagerly await the next page (some webcomics updated/update once a week, others twice, if you’re lucky, a lot have hiatus where they have guest comics coming in).
When I saw it in Waterstones it was like stepping back to the past and reminding myself how much I loved webcomics. (Nowadays I only follow a couple) SO of course I got a copy of it. And I read through it in bed before sleeping. It made me smile, and it made me remeber how much I liked it.
The art work is nice and cute, the story is original and fun. Worth a read, specially if you like Lumberjanes and Moonstruck.