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Just made a breakthrough on there actually being pictures of the prototype Hubot unit vs the final product.
The proto unit noticeably has a much larger bottom logo (even one unit with it painted black?), and the black circles near it now being on the inside indent instead of facing front.
(Pics #1-2 are proto, #3 is release)
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The prototype unit also has a unique face with larger gaps between characters, but weirdly there’s these two promotional images that swaps between the proto and retail face??? So maybe its a face we haven’t seen yet cause the software hasn’t been emulated, but still a possible prototype software.
(Btw btw if you wanna read more about Hubot I have everything u need on A.V.R.T.C)