SCP Foundation

Here is my idea.

This SCP is a man that exists yet NOT exists both at the same time. he phases in an out, sorta like a living .gif image. he seems sorta transparent and blinks in and out of reality both at the same time.

It is hard to explain how quick he phases in and out. Imaging cutting a second in half, then cutting one half of the second into more halves, and repeating this twelve more times. The resulting half would be how fast he phases in and out of reality. This is so fast that he looks like a transparent blur when he walks.

Also, he floats and moves through walls.

The foundation does not know why he does this or how he came to be, but they are working on the fact of containing him. He cant move through certain metals as fast as he can others. The stronger the metal is, he quicker he can move through it.

The man is named Billy S. Newton, as he claims.

Mmmm. This just feels like a super hero more than an SCP object. Lately, our taste in humanoids has moved aweay from "people with awesome powers" to "people afflicted with weirdass shit that's beyond their ken." The latter is a better source of conflict, because there's the inherent struggle of trying to live your life while dealing with the effects of the anomaly.

The basic effect isn't interesting, either - fine, he moves through walls. All this does is make it REALLY hard for the foundation to contain him, and we already have a guy who can phase through walls and break out of containment with ease. SCP-106 is one of the best articles on the site, and this will inevitably draw comparisons (they won't be in your favor, unfortunately).

I'd put a little more time into thinking about how you want this humanoid to interact with the effects of his anomaly, how he thinks of them, how they affect him.