Split-a-lot Zomboss

Split-a-lot Zombot is one the robots created by Dr. Edgar Zomboss, that splits when damaged enough.

1st Phase

 * Summon - Summons zombies at his range along the way.
 * Missle - Incredibly weak, but was launched in groups.
 * Stomp - Instantly kills any plant nearby.
 * Split - The most dangerous ability, for he could do the said abilities above twice as much! Once it split, the second phase will follow.

2nd Phase (Split into 2)

 * Summon - Summons zombies at their range along the way.
 * Missle - Incredibly weak, but was launched in groups.
 * Charge - Charges, killing all plants and zombies on its way.
 * Split - The most dangerous ability, for he could do the said abilities above twice as much! Once it split, the third phase will follow.

3rd Phase (Splits once again into 2)

 * Summon - Summon zombies at their range along the way.
 * Missle - Incredibly weak, but was launched in groups.
 * Bomb - ALL of them launches a bomb, destroying a clump of plants and zombies on the same tile.
 * Split - The most dangerous ability, for he could do the said abilities above twice as much! Once it split, the fourth phase will follow.

4th Phase

 * Summon - Summon zombies at their range along the way.
 * Missle - Incredibly weak, but was launched in groups.
 * Missle Storm - ALL of the remaing robots in these phase will fire missles at the same time.

First Phase
First Phase was not that much of a threat actually. Destroying the zombies blocking the way and avoiding planting something near him could set him down. Missles were not that much of a threat, so you could ignore when those happens.

Second Phase
Second Phase is now a threat already, for they have the ability to charge, clearing the plants and zombies along the way. Counterattacking with Plant Food could stun them for a while and at the same time, stops its charging ability. Missles were still not that much as a threat though. Other than that, it was not too hard, for they also split their health away, so it was easier to bust one.

Third Phase
Third Phase is now not that much of a threat. However, you cannot counterattack their Bomb Ability stated above, so it could cause chaos if you will not be alert. Their Missle Ability was now a threat, for they could also destroy a pack of plants. Other than that, you could bust this easier than the others above, for they also split their health away.

Fourth Phase
Fourth Phase is still not that much of a threat, for it was the weakest one, counting only one. Their Missle Storm Ability were now a huge threat, but busting some robots cool down the ability a bit. Other than those, it was not much a threat, for it was the weakest of them all.