I've got large crows that run across the roof.
They sound like they're wearing work boots.

If it's a regular nightly occurrence, then anything nocturnal is likely. A raccoon, possum, owl, and even a squirrel returning to his nest are possible.

We have a flat roof extension. Often you can hear this thumping on the top. It's magpies actually. They have really heavy feet 😂

The fox who sometimes sleeps up there in the sun is lighter on his feet.

Omg my last job had a rat on the roof. I could hear it crawling up the wall i was standing by the window and heard a scratching scuffling sound go up the wall and then over my head. we called the exterminator and he went up there and said, "He's a big one" that didn't make me feel any better

I've had a bunch of giant vultures land on my roof before and they sounded like grown men walking around up there

When I lived at my previous place, I had maggies and crows on my tin roof, sounding like men in work boots when they ran across it, I didn't know what to think the first time few times that I heard them, I was surprised that they being so small would sound so loud☺

My neighbor used to be a cop. When that happened the same old woman used to call the cops claiming UFOs were invading.

Birds.

Some shingles could have come off loose. Can get loud when it’s windy

im worried that you havent posted since this 😕

It was me. Lol

Santa comes early

A leaping cougar. 😅

promise it wasn,t me...id knock at the front door

It's either a bird or a squirrel. It happens all the time on Earth.

Probably ICE. Hope you like alligators.

honey badger?

seriously a cat can sound pretty loud

Werewolf, obviously.

Probably someone who has been living in your attic.

Mynocks.

like, duh, go outside and look

A troll maybe

I guess you have no ideas what to feed it, then!

Probably nothing more than a giant killer squirell!!

An alien