who is your most challenging character?

Hot contenders are Captain Cannon and Electro Pea due to their special weapon mechanic, where one left click launches a bomb and the next trigger its explosion mid air. Can probably be good if mastered though.

At the moment the prize has to go to the standard Imp variety due to a weak gun and 50 hp it is just very hard to play in any kind of multiplayer in my opinion.

Definitely the electro pea, captain cannon & petrified cactus. Their shot is just too slow and with the fact that you kind have to detonate the shot most of the time, it's definitely challenging.

Electro Citron is also definitely bit of a weird one, you must search for the groups or it's difficult.

Captain cannon and petrified cactus are probably the most challenging to play right now (Electro pea is a tad bad compared to those right now). That "explosion in second click" gimmick is hard to get used to. But you can clearly see the potential of a 30-35 damage splash that you can use whatever you want.

Another notable contender would be chomper in general,electro citron and agent pea sorta.

You guys know nothing, the hardest character to raise up is the chomp thing which has 125 lives and takes 6 and most other spray chompers take 8 or 10 with 175 lives. Also the camo catus takes forever to raise up. I had to get over 150 kills to promote it.