ZOMBIE INFECTION: When Magneto damages an opposing character, give that character a Virus token if it has less than 5 Virus tokens. When an opposing character is KO'd by this character, you may add it to your force, turn to its first KO click, remove all of its Virus tokens and heal it that many clicks.

CONSTRUCT: When building your force, you may attach a construct to this character by paying its point cost. Give this character a power action and replace the construct with any other construct, up to 2 points higher than the original construct. If this character has no action tokens and the new construct is a lower point value than the original construct, this is a free action instead.

If a z-virus character adds a character that used the construct trait to its force does it still get to use the construct? Does it get the one it had when it was ko'd or the original construct? Could the z-virus team switch to another construct if they had them on their sideboard?

http://www.wizkidseventsystem.com/bb...onstruct#p3009

This is specifically referring to Constructs granted via Power Battery, but there is really no reason it would work any differently for the Construct trait.

Zombie Galactus - would be KO'd.

In this case, the figure IS KO'd, so may not be the same result.