"HE STRIKES FROM WITHIN: Loki can use Toughness and all copyable Team Abilities that opposing characters can use."

When an opposing character is KO'd, can Loki continue to use that character's TA?

Can Loki also use opposing ATAs?

No, they are no longer on the board for him to use.

Yes, they are still team abilities.

*Note this is if the wording is accurate*

That's what I thought, thanks

Can Loki Copy Wildcards?

No, he can only use copyable team abilities. Wildcard team abilities cannot be copied.