Okay, I know I mentioned my guess in the comments (referring to the mysterious puppet at odds with Topham), but I wanted to explain my theory.
(though, I figured doing it in the same comment section would be too long. So, I'm sending it here, but don't feel obligated to answer at all. This is just me spit-balling.)
So, we know Smudger was turned into a generator in the model series, right? Right. He can't move or do anything.
So, hypothetically speaking, in this AU, he could have been victim to wicked humans (maybe he worked at one of those horrid factories) and lost his original limbs for being quote, "out-of-line" *insert obvious air-quotes here*. And is left immobile as a quote "example" *bigger air-quotes*.
Fast forward to the present time, and he's rescued, patched up (like Henry), and given work by Sir Steven Topham as a gesture of good will and an opportunity to heal, but like Spencer, Smudger is hostile to all humans and will not see reason, leading to many arguments between controller and puppet.
I could be completely wrong on so many levels, but it's just a theory...
(Sorry, I couldn't resist!π
)
Well you're definitely right Smudger definitely hates humans....
Because of what happened....
Humans were definitely rough on him we'll tell you that, he does get into bad arguments with Stephen Topham Hatt...
Too bad Smudger definitely doesn't want to come out to talk about it
.... As if he could speak.... anymore....