This was made for a very loved tortoise but could be adapted for guinea pigs with wire or a cover over the top to keep out predators. For me, it would just be an outdoor playtime cage only with supervision.
(This is a closed species, meaning you can't make your own without my approval. You can get one through auctions, contests, raffles, or by commissioning. Razzmaw species ref (outated but still relevant)
Yutyrannus (meaning "feathered tyrant") is agenus of tyrannosauroid dinosaurs which contains a single known species, Yutyrannus huali. This species lived during the early Cretaceous period in what is now northeastern China.