A/N - Silver joined the egos before Bing which is why he isn't listed in the introductions. Google's upgrade is after Bing joins the building, so there's only one droid.
Nobody could tell you when he started going by Tobias, Tobi for short. It just kind of started. A lot of things started after he dyed his hair. Tobi started venturing out into the building, introducing himself to the others, though of course keeping his true identity hidden. He started leaving the building on his own, just wandering round enjoying being able to pass as human for the first time.
Tobi….yeah it'll take a while for him to get used to that… Tobi does his best to avoid Dark and Wilford. That way too much confusion and painful reminders lie. But still he meets King of the Squirrels who's pretty chill, if a bit….squirrel mad. Then the Jims, though they're a bit high energy for Tobi to interact with everyday. Ed Edgar is just plain fascinating, and Tobi delights in aggravating him with logical arguments against selling people. Google is strangely intimidating and Tobi does what he can to be as not bothersome as possible.
Bim is still his favorite person though, and Tobi goes with him to a whole bunch of shows and concerts. It takes him a while to understand the appeal, but after listening to a couple soundtracks, seeing a few live performances, and one time he manages to convince Bim to perform 'As Long As You're Mine', Tobi loves it just as much as Bim does…well, almost. Bim just has a big love for the theater.
He meets Roxy while at some kind of local community centre. Having little to do in the ego's building, he wants to pick up some hobbies and has already given up on more hobbies than he ever dreamt of trying. She's there when he's trying to find something new and tries to entice him into dancing and, desperate for more human contact, he kind of falls for her shtick and joins. There's a lot of passion and flirting and Tobi honestly feels alive.
As they're leaving, Roxy writes her number into his phone saying something about dancing tips but there's a smirk on her lips and a wink as she leaves. Tobi wonders what the hell happened just there but there's this feeling, kind of low in his gut and he follows after her.
He follows her, discreet as he can manage, and it's a few streets over that someone attacks her. Within seconds, Tobi is pulling them away, throwing himself into the fight as he refuses to let her get hurt. When the attacker leaves, when they're both sure they're safe, Roxy kisses him and it's the first real contact he's had in this world and he kind of loses himself in it. She calls him her hero, and he walks her the rest of the way home. She kisses him again and the two of them are now apparently a thing.
Of course he tells Bim the whole story and they find a few colorful bruises from the fight starting to come through. Bim makes a throwaway comment that maybe he should become a superhero.
Tobi just dismisses him though, calling it a silly idea, though he can't deny how much of it lines up quite nicely. He's not human, or even of this world, he has a secret identity, he apparently has this hot-ass girlfriend now, and he has always wanted to protect the people he cares about.
Days pass, and Dark approaches. Apparently he's heard that Tobi is considering becoming a superhero and he's smirking as he offers a costume. It's embarrassing. It's grey and black and Tobi knows, he knows, that this is meant to demean him. It's meant to make him feel like he will never not be grey. Dark's smirk, the fact that superhero costumes are supposed to be colorful, the fact that the costume covers up his hair. This is just a way for Dark to feel better about himself, to not feel left behind by his alternate self, to level the playing field between them.
Tobi flips him the bird and tells him to fuck off. Dark leaves, and leaves the costume behind.