HI
Can use Outsider team ability to no modify -2 to attack when use -SPEED OF CHARGING DREADNAUGHT- speed power the Incredible Hulk LE?

-SPEED OF CHARGING Dreadnaught- is not a special ability is a power, and the rule Otsiders applies to powers and team ability.

NO, I believe its usable only against enemies, but there is a feat you can use that allows you to lock a stat so that it cannot be modified, cant remember which one it is.

The source of the modification is still an ability (even though it is accessed via a power) so Outsiders has no effect.
Outsiders can be used on friends and foes alike IIRC.
The "feat" you mention is probably the Communication Breakdown BFC.

Quebbster is right, of course. The example that I remember most recently was a friendly character using the Outsiders TA on Crisis Darkseid to negate some of the range and damage modifications when using The Omaga Effect SP.

Just the damage value in option 2. The range change (halving the range value) is a replacement.

That was it. Thanks.

Back when it existed, you could Outsider someone and HSS option 2 and thus prevent their defense from increasing with each attack, could you not?

And the ever so romantic love between rookie Katana and Colossus to avoid the -2 to attack and damage from Fastball Special.

A player in my area used Metamorpho instead of Katana in the Fastball Special combo that you mentioned.

Indeed you could. You could also Outsider an enemy HSSer and prevent them from having their damage increased while doing a HSS option 2 attack.

what if you were to outsiders your own attacking character. Wouldn't that make his/her damage unable to be modified and therefore go straight through toughness/invuln/imperv?

No. Damage reducing powers reduce the damage dealt to the target, not the damage value of the attacker, which means they're not modifiers and aren't affected by the Outsiders team ability.