User blog comment:DCT0473/Brief Thoughts on Every PVZ 1 Plant/@comment-33629444-20180711153931/@comment-27462035-20180713030850

Chomper is bad. Having to be at close-range and being left vulnerable for a good amount of time is a huge flaw. It can be ok with defensive plants, but there is no reason to use him over other offensive plants, especially since he takes up a precious slot.

Summing up, Chomper's extremely vulnerable to hordes of zombies. While he can be somewhat usable in PvZ1, it is near impossible to justify using him in PvZ2.