Say, Juggernaut was charging through Blocking Terrain to attack Magneto.

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BBBBBB
--J---

The dashes are clear terrrain, you can figure out the rest. Juggernaut must stop in the Blocking Terrain as he becomes adjacent to Magneto, but a character cannot end its movement in Blocking, so the action would be illegal, correct?

No, Juggernaut is not stopping in blocking terrain, he breaks it down as he moves through it.

The destruction of the terrain occurs after actions resolve, not at any point during the movement. Megatreky's original premise is correct.

I agree that he should be able to ignore other characters.

Thanks.

Nope. Let's look at the actual wording of the power.
He ignores terrain as he moves. After actions resolve, he destroys walls and blocking terrain that he moved through. That's an important difference.
In the scenario posted, he would NOT be able to charge through the blocking terrain to hit Magneto.

However, there are ways to make this legal. In modern age games, he can pick up Mjolnir to get the flight ability. In golden age games, another option is to give him the movethrough feat, which lets him ignore characters for movement purposes. In either of these cases, he could charge through the blocking because Magneto wouldn't stop his movement.

Derp derp....

The reason that elevated is not adjacent to grounded terrain is because the rules specifically say this. Nothing says that a square of blocking terrain isn't adjacent to a character next to it. The square of blocking that Juggie would need to move through is adjacent to Magneto, so he would have to end his movement there. He can't end his movement there, because it's a square of blocking terrain. Because he can't do that, the action would be illegal, so he can't be given that action.

To add to Vlad's statement Unlike blocking though, he could go through walls and hit a person on the other side, because characters on opposite sides of a wall are not adjacent.

Actually, that wouldn't work. Juggernaut ignores walls when he uses charge, so you treat the wall as though it isn't there. So, because the wall isn't there, he would be considered adjacent to Magneto, so he would have to stop moving.
Now this is where it gets trippy.
---M--
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--J---

When Juggernaut moves up one square during charge, he and Magneto become adjacent, because he's ignoring the wall. He would have to stop moving, but then he could go ahead and make a close combat attack against Magneto (because he's still ignoring the wall). And because the wall that he was punching Magneto through wasn't crossed by his path of movement, it wouldn't even be destroyed afterward.

Ok I must be going crazy. Juges the unstoppable has to stop for babies, and he can punch through walls.

I'm glad he is on Thunderbolt now, because he apparently has been hanging out with Kitty to long.

NOTHING CAN STOP THE JUGGERNAUT except babies.

Hey, I did say it was going to get trippy...

Juggernaut punching someone on the other side of a wall makes more sense than Juggernaut deciding not to move through that patch of blocking terrain because a squirrel will cause him to come to screeching halt before he makes it all the way through.

All he has to do is move 1 square to the right (in that diagram) and then back again to Charge in on Magneto. Assuming there are no other characters he'd become adjacent to.

Vlad,

Well, I see where the wall scenario was going, but I understand it such that Juggernaut would ignore the wall for the movement portion of Charge, but he would NOT be able to ignore the wall to reach through and punch Magneto in the attack portion of Charge.

Am I right?

Once he stops moving, he stops ignoring terrain. The free close combat action from Charge is not movement.

It says he ignores terrain until the action resolves and the action doesnt resolve til after the attack