Barry Allen is capable of running faster than the speed of light and, at times during the Silver Age, described as faster than the speed of thought. In Flash #150, "straining every muscle," he ran at ten times the speed of light. However, when he pushed himself further (during the Crisis on Infinite Earths) he appeared to waste away as he was converted into pure energy, traveled back in time, and was revealed in Secret Origins Annual #2 to be the very bolt of lightning that gave him his powers. This was later retconned in The Flash: Rebirth #1, where Barry stated that he "ran into the Speed Force," and that, "When [he] stopped the Anti-Monitor, when [he] ran into the 'Speed Force' and joined it, it was like shedding [his] identity."
Barry Allen possesses abilities that Jay Garrick has not always been able to duplicate, most notably the ability to "vibrate" in such a way as to pass through solid matter. Allen has regularly engaged in time travel using the Cosmic Treadmill device (he no longer needs this to conduct this feat), and is able to "vibrate" between dimensions. Barry is unique among Flashes and most characters in the DC Universe in that he has complete control over every molecule in his body. In Grant Morrison's Final Crisis, using the Speed Force, Allen was able to undo the effects of the Anti-Life Equation upon an individual: an ability he used on his wife Iris to free her from the bondage of Darkseid's mind control. He has recently been revealed to not only be connected to the Speed Force, but is the very source of it, generating it with every step he takes. As such, he presumably has some of the Speed Force-related abilities other speedsters have demonstrated (such as lending and stealing speed), though he has yet to demonstrate such abilities. This alone is enough to make him one of the most powerful beings on Earth, and perhaps in existence. He is also immune to telepathic attacks and control, as he can shift his thoughts at a speed faster than normal thought. He used this tactic against Black Lantern Martian Manhunter in Blackest Night. Through "speed-reading" Barry can absorb large amounts of information into his short-term memory, which remain in his mind just long enough for him to make use of it. Using this technique, Barry was able to learn enough about building work to rebuild a destroyed apartment building.
http://en.wikipedia.org/wiki/Flash_%28Barry_Allen%29#Powers_and_abilities
When Cain Marko finds the Gem of the mystical entity Cyttorak, he is empowered with magical energies and transformed into an immortal avatar. As the Juggernaut, Marko possesses superhuman strength, being capable of shattering mountains, lifting and using buildings as weapons, and extreme durability, which is also amplified by a mystical force field that grants near invulnerability. When the force field has been temporarily absorbed by Thor's Hammer, the Juggernaut's natural durability proved to be great enough to withstand blows from Thor. The Juggernaut is described as physically unstoppable once in motion, does not tire from physical activity and is able to survive without food, water, or oxygen.
The character, however, is vulnerable to mental attacks, a weakness that has been exploited via the removal of his helmet. The Juggernaut has circumvented this weakness by on occasion wearing a metal skullcap inside his main helmet. If Juggernaut loses his helmet he can recreate it by touching certain materials (as long as he possesses the full power of the gem).[volume & issue needed] It is possible for an opponent with sufficient physical strength of their own to turn the Juggernaut's unstoppable movement against him, by redirecting his motion so he gets stranded in a position in which he has no purchase; both the Hulk and his son, Skaar, have managed this feat. Once, the entity Onslaught, which possessed unknowable psionic and reality-warping powers, somehow ripped the Crimson Gem out of the Juggernaut, subsequently trapping him inside.
http://en.wikipedia.org/wiki/Juggernaut_%28comics%29#Powers_and_abilities
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