How does Azerath's avatar change?

[Defendor]

right here it's spy (i think; but it also has a pyro face)
http://forum.blockland.us/index.php?action=profile;u=4399

and then right here he's a pyro (for sure)
http://forum.blockland.us/index.php?topic=61562.msg1006525#msg1006525


but how could he change his avatar like that if he hasn't even logged in for a couple years?

[Ad Bot]

[Drydess]

Transparency, which one it is depends on whether the background color is the blue or the white.

[Blocky943]

Terrific transparency trickery.

[Defendor]

ohhhh I see it now. that's incredible