King of the Hill!

[Ganyu]

But I am the Demoman, who now becomes Demoknight and whacks your weenie arse off the hill. My hill.

[The Nonexistent Tazz]

OK, it was the OTHER Demoman. But anyways. As it turns out, my 'weenie arse' was actually part of a dummy of me, animated by magic and made entierly of TNT, with a switch on the buttox. I throw the dummy uphill. You can guess where this goes: you're currently in Nowhere-near-the-hill-ville's giant mutant crocodile infested sewers. Oh, and they can eat Phantoms...In some manner. Just thought I let you know...

LOOK, I DON'T RESEARCH THIS STUFF, OK?! Anyways, the hill is mine. Come at me bro.

MY HILL!!!

[Ganyu]

Did someone say sewers? As a Spy, I am very expert at this sort of undercover grounds. Lovely, my territory. I backstab the whole lot of you peasants, flick my cigarette at your corpse, take back the Blue intelligence which also contains the ownership for the hill. MY HILL.

[The Nonexistent Tazz]

...Except I'm the Pyro, bane of all Spies. Yes...The opposite-colored one to yours (as I do not know which team you're on, as the only kind of hint was ambiguous at best, I'll be ambiguous here, I'm slightly colorblind in that suit anyways). I torch you all the way back to your base as the Pyro and rallying my side's allies, managing to stop you before you get the intelligence, and reclaiming the hill with my deed that I mistakenly placed in there in the first place.

MY HILL!!!

[Ganyu]

(Pretty sure TVTropes doesn't teach you that; I stated I was blue btw, it was an obvious word any 2 year old knew.)

You killed me. Or did you? I leave that up to you to figure it out. While I run around like a ghost, I backstab you and take off with the intelligence and deed. My hill!

[The Nonexistent Tazz]

(Trust me, stuff like that winds up being there.)

I summon MONOCULUS! to the field. Unfortunately for you, nobody else is there, so MONOCULUS! kicks your rear end (metaphorically speaking) and I retrieve my hill-ownership, far away from the battlefield where you're doomed to solo MONOCULUS!.

MY HILL!!!

[Rival Max]

Using a cloak that made me invisible I sneak up behind you and with a light dusting of sleep power put you to sleep then roll you off the hill.

My Hill

[The Nonexistent Tazz]

My substitute practically rams into you as it tries to intercept the attack. It reveals you, and I promptly smash you with a 2 by 4 that was conveniently lying around. I then throw it at you as you're sent tumbling downhill, and some bald kid, yelling "PLANK!!" in a watermelon helmet of some sorts comes in and starts doing a very nasty job in brutally pummeling your lights out. While I watch, I reclaim the hill.

Kudos for whoever gets the reference.

MY HILL!!!

[Dragon Master Mike]

I fly over the hill in a WWII bomber and bomb the hill until everything is gone. I then crash land and claim the hill.

MY HILL!

[Steel Lunpara]

I walk up the hill, coat blowing in the convenient wind and overly generic mirrored sunglasses reflecting the sunglasses, and using the almighty chain-gun-chuck-blade, hit the only thing in sight in the face with the chainsaw taped to a nun-chuck (the other end of which is taped to a shotgun, which fires a sword).

'Tis my hill, mortals.