The Chomp Jr. pickaxe is an Epic Fortnite pickaxe. Chomp Jr. was available via the Item Shop for 1500 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Chomp Jr. Skin Details
They're going to need a bigger fort.
Fortnite Chomp Jr. Skin PNG Images
Here is the PNG images of Chomp Jr. below!