I was attempting to make a goo-bur design to sell, but I ended up getting attached to his one and giving him a back story... I couldn't get myself to put him up for sale after that, I think he's worth more to me now than a reasonable price. So, this is Prince Lux, the first of the gooburs.
Lux was created by Savato accidentally during an experiment to create goo that replicated itself to help his goo dear heal from injuries faster. However, the goo accidentally gained life and became the first goobur. Prince Lux is much smaller than other gooburs, he's much smaller than most humanoids too and easily fits in Savato's lap. He cannot eat humans and cannot gain lasting girth from eating, everything he eats is eventually laid as an infertile egg of goo, which were eventually experimented on and combined to make the goobur race as you all know it.
Prince Lux stays with Savato, acting as a pet/companion for him while he works.