Zombot Dinotronic Mechasaur

Zombot Dinotronic Mechasaur is the boss and final zombie encountered in Jurassic Marsh on Day 32. The Zombot can use laser eyes to kill all plants in a lane, alongside shooting two missiles that instantly kills plants.

Almanac entry
A mechanical means of dinosaurian destruction.

Special: summons dinosaurs

With flagrant disregard for temporal tidiness and simple good taste, Dr. Zomboss figured it would be a good idea to build a big metal dinosaur.

Trivia

 * The Zombot Dinotronic Mechasaur appears very similar to Onix and Steelix from Pokémon.