Bird or the cage?

Elizabeth: Mr. DeWitt–here!
A Gentleman: Bird?
A Lady: Or the cage?
A Gentleman: Or perhaps the bird?
A Lady: Nothing beats the cage.
Booker: These two again? How do– …Never mind.
Elizabeth: Look at these, they’re amazing! Which one do you like more? This one…or this? The bird is beautiful, and… the cage is somber, but there’s really something special about it. I just can’t decide.
- Bioshock Infinite

Does it even need to be said?

Our little Icarus would rather rip his own wings off, if it prevented them from getting clipped again or if he thought the cage door was closing.

He will not be caged. Even the illusion to putting him in a cage, literal or metaphorical, will make sure that Tyson never returns.

Tyson would rather fly free, and have the trust from someone else that he will always come back. That so long as the door remains open, Tyson will tumble in through the window instead.

He assumes that it’s part of being a soldier: the romance of being on the road, always having someone waiting back home, et cetera. That’s more of a commitment to him, than being tied down: having to trust that whilst the other is away, they’re happy and that they’ll be coming back home eventually.

Tyson isn’t someone who will move in with you, but he will climb through your fourth-floor apartment window with a cavalier - devil may care - smile and stay for as long as he can, then leave the way he came with a promise to come back soon.

Which is why his arrangement with the Moriarty Mirrors works.

Employment to the web is for life. You cannot leave.

And yet, The Moriarty Mirrors can tell Tyson with complete sincerity that ‘he is free to leave at any time’, because he never will. And they all know it. There is no danger in allowing Tyson to remove his leash. He will always come back. He will not betray them.

Tyson knows that it’s a far bigger trap than an actual cage. That his loyalty will be his undoing. Yet so long as he has the choice to leave, Tyson will always remain as their loyal Pup instead.

Club Penguin

When Tyson isn’t babysitting or talking over the phone with his nephew, Tyson will interact with his nephew on Club Penguin instead.

James has mostly grown out of Club Penguin now, but it’s become a little tradition for them, so James will always be the one to text his uncle and ask him to come online to play with him for a little bit.

Doctors' Orders

Though generally an agreeable person, Tyson is a walking nightmare for any medical professional.

He will go out of his way to defy doctor’s orders, even - and often - to his own detriment. The only medical professional it can reliably be assumed that Tyson will actually listen to is his dentist and, on the bluest of all blue moons, to John Watson.

It’s not even that he doesn’t respect his doctors, Tyson knows that most work very hard and that the web only employs the best, but whenever he is met with orders from a doctor, agreeable Tyson who will jump through a thousand hoops for a stranger suddenly does a complete and utter turn-about.

Need to rest and avoid pulling his stitches? Well, his weekend plans were to stay inside, but sure, he can go parkour across London. Be careful with that leg? Tyson will put all of his weight on that leg without fail. Keep that brace on for a week? The time it takes to get out of the doctor’s eyesight is a week, surely…