Halo: Anniversary - GRD Helmet Teddy Bears Easter Egg Help

Hello people. I have discovered that there is an Easter Egg where you find teddies with GRD Helmets. I have “claimed” them all apart from the teddy on Penance. Does anyone know a way of how to get this? Or is it impossible at this time?

Also: No, I’m not one of those that argue about this. I’m just curious about this. And also: What’s with the green dripping juice?

> Hello people. I have discovered that there is an Easter Egg where you find teddies with GRD Helmets. I have “claimed” them all apart from the teddy on Penance. Does anyone know a way of how to get this? Or is it impossible at this time?
>
> Also: No, I’m not one of those that argue about this. I’m just curious about this. And also: What’s with the green dripping juice?

There is already a huge topic about it here. And for the slime; I guess it’s Flood-y slime (yes, in a Covenant Waterplant or whatever)