Wally (played by Shawn C. Nelson) is a curly-haired man with glasses and worked as a scientist at the Splice O' Life laboratory in the Clamp Center building. He is a good friend of fellow scientists Martin and Lewis.
He worked on a special vegetable formula that allows vegetables to become more durable, as shown where he demonstrates his work to Martin and Lewis by bouncing a tomato almost like a basketball. When the Gremlins reached the laboratory, one of them drinks Wally's vegetable formula and transforms into a Vegetable Gremlin. It is unknown whether or not he survived the gremlin attack on the Clamp Center, however like the other scientists, he probably escaped the building.