Imagine a person with a superman-esque flying brick powerset.
They are
-Fast enough to outrun the fastest object ever created by man.
-Can dodge the fastest thing ever fired by man
-would be unharmed by the most powerful weapon ever built by man
-Can lift the heaviest thing ever built by man
-Has heat vision that is hotter than any temperature man has achieved
-Has a sonic scream louder than any sound recorded on earth.
And so on*.
Basically, any test of his limits that could be done on Earth, he could pass without effort.
Note that this does not cover any hypothetical technology, only stuff that we've already achieved (or things created by natural phenomena on Earth, if we haven't been able to match the phenomena)
*I can't think of every attribute this character would have, so feel free to ask for clarification