Flanion

Flanion set zombies on fire and stuns them

Strategies
Flanion can stun all zombies in his area of effect instead of just one target like Iceberg Lettuce

Set zombies on fire, which does more damage in cold areas

If he doesn't stun a zombie, he can be used to heat up plants around him

Plant Food Ability
Plant Food:

Make powerful burst of flames in area 3x3 infront of him and stun zombies in 5x5 area

Golden Plant Food:

Set all zombies on screen on flames and stun them

Trivia

 * It's my twentieth created plant
 * His image is shadow