One of the well-known move of a speedster is phasing through solid materials. As mentioned here,

Phasing is a term used to describe the ability of some characters to move through solid objects.

And one of the Flash's key ability is Phasing (here) described as:

The Flash has always possessed the ability to control his speed and angular momentum at the molecular level, and control his molecular interactions to allow his body to pass through any substance.

Almost all speedsters (except the Golden-age Jay Garrick version) have shown the capability of phasing through metallic substances, walls and in some cases, also, on multiple occasions, through living beings (humans).

Is it possible for The Flash (or any other speedster in this case) to phase through a Kryptonian (like Superman or Supergirl)? Because Kryptonians are known to have an (almost) impenetrable skin.

  • @Paulie_D My initial thought is NO. because if it was possible, I'm sure Luthor would have created some sort of weapon to take down the Man of Steel :p (just an opinion though) – Shreedhar Jan 19 '18 at 15:25
  • @Paulie_D - Unless it quits phasing while still conjoined with Superman. – JohnP Jan 19 '18 at 15:44
  • @Paulie_D - Not really. Just a matter of timing. :) – JohnP Jan 19 '18 at 15:51

Yes...and No.

The Flash has phased to avoid/reduce an assault/attack by Supergirl

enter image description here


Superman/people can vibrate themselves so that might complicate things.

enter image description here


  • Right at the nick of time @Paulie_D :p I too found the Super-Girl link a few minutes ago. – Shreedhar Jan 19 '18 at 15:56
  • Google-Fu....:) – Paulie_D Jan 19 '18 at 15:58


They clearly and easily can. A speedster like the flash vibrates trough objects by abusing the idea of matter at atomic level being basically 99% empty space. So they vibrate the molecule of their body at the right frequency so to be able to move them into this empty space.

Flash can easily vibrate through a lot of high density things, like metals for example. And this makes a lot of sense anyway: the moment atoms are so packed together that the space between them become impossible for a speedster to vibrate through, then we have a black hole and Flash has way bigger issues to care about.

Now, let's come to our Kryptonians. Are they made of black holes? No, totally not, not even in the wildest canon ever written. The average Kryptonian is, according to official canon, simply a tiny bit denser than an average human being; something around 100 kg of weight by 190 cm of height. Is the average human being denser than metal? No way. Is an average human being denser than a wall? Nope. So, yes, a speedster can easily vibrate through a Kryptonian.

Not taking into account that currently 99.99% of Kryptonians are in the form of space dust, so their density is quite low anyway


The Flash, thank to his connection to the speed force, which is basically "the material speed is made of", is the fastest thing in all creation. If something can go extremely fast, the Flash can still go faster, 'cause he is speed itself. He is so fast that his punches can hit with infinite energy, he is so fast that he can see the flow of time, he can think so fast that he is practically the smartest guy in the universe. Thus he is often depicted as the stupidest guy in the Justice League, he get beaten regularly despite being impossible to hit, he slide on ice, has very high reflexes only when they are not needed, and so on.

Now enter the teacher's pet, Superman. Flash could annihilate Superman in a blink of an eye, according to the official, canon powers of Flash, if it wasn't for a simple power Flash has not: Superman is DC's darling. So no matter how counter-canon or ridiculous or plainly wrong the story turns out, Superman wins.

So, in conclusion:

  • Can a speedster vibrate through a Kryptonian? Yes, easily.
  • Can a speedster vibrate through a specific Kryptonian, Superman? Yes, but only if it's for comical relief.

Phasing is just to vibrate an object to attain the natural vibration of another body in order to pass through it ... Here Flash might be able to phase through it but it may be really tiring...

  • What’s “a real tirey work”? – Arya Apr 28 '18 at 5:20
  • Dude in order to phase through kryptonians speedsters has to vibrate themself too much , and doing so would be a tirey work – Jaysan markus Apr 29 '18 at 16:47
  • I edited your post to make the phrasing clearer - from the rest of what you’re saying, I’m guessing you mean it’ll be really tiring. – Arya Apr 29 '18 at 17:42

A speedster can definitely phase through a Kryptonian. He just merely passes through

enter image description here

Now if he really wants to hurt Superman, say pull out his organs, he just hurts himself.
There is no way he can expect to materialize is hand in Superman's body. He would be trying to displace something that is much more durable than him.

So, bottomline is that The Flash can phase through practically anything but he simply cannot displace anything more durable than a human with himself.

  • 3
    Can you provide any sources that this is true? Having evidence to support your arguments makes them more believable. – Edlothiad Sep 5 '19 at 22:36

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.