Torchwood is a plant in PvZ 2 (Plants vs. Zombies 2) that lights peas on fire, dealing double damage to the zombies. If given plant food, his fire will turn blue, dealing further damage. Torchwood will give warmth to plants in a 3x3 area around him in the frostbite caves.

Torchwood Wiki: http://plantsvszombies.wikia.com/wiki/Torchwood

Credit goes to waji for the fire block.