Here's Some Facts About Harv and Wally
In Harv's lore their actually Wally Darling's sibling, which is why they share the same last name. They might have the same body type, but they don't have the same traits and personalities.
Harv is a bit taller than Wally, about 4 apples taller than him. But they're the same height as Sally Starlet and their close friend, Piñata Puppy from PPW (I'll explain a separated lore/fact about this soon...)
Harv also doesn't sound like Wally. Wally has more of a monotone voice, While Harv has a softer childlike voice, almost like a young girl's voice. Harv had more expressive emotions unlike Wally who seems to be static only shows emotions through his eyes.
In case for anyone wondering if Harv eats the same way as Wally... They Don't. Harv doesn't eat with their eyes like Wally, they eat normally like the other neighbors, only Wally was the one who drink and eats with his eyes. If Wally ever eats with his eyes when Harv is near him, they will tether with each other. You don't want to know what happened after Harv found out about it...