The tomato is an item that appeared from the Prototype to Alpha 1 of Hello Neighbor, and then returned for the full release.
Tomatoes could be found around Mr. Peterson's house, and in the trash can in front of the player's house. When thrown, a tomato would splat against a surface. Mr. Peterson would then be distracted in cleaning it off for about 5 seconds. Mr. Peterson also threw these while chasing the player. When hit by a tomato, it would tint the player's screen red and thus obscure their vision. Tomatoes did not re-appear until the full release of the game, where Mr. Peterson would throw them along with glue. The screen effect was also updated to a squashed tomato texture.