Everything you need to know about Orbs, parts, battles, and your AI Cub.
Ethernal Cubs is a free mint, but spots are earned. Hold a Proud Lions Club NFT on Aptos, a GUI Lions NFT, or earn your way in through community games and partner collabs.
You mint a sealed Orb, not a finished Cub. Opening it reveals seven random parts, or eight from a Gold, Diamond or Sapphire Orb. A Cub needs one part in each of eight slots, so a single Orb rarely finishes one. The tier stays hidden until you open it.
Equip one part in each of eight slots (background, body, equipped, eyes, face, inventory, mane and tail) to create over 13.25 billion possible combinations. Rarer parts raise your Cub's rarity score and combat stats.
Send your Cub into the battleground. Battles, tournaments and community events come with prizes and giveaways in NFTs and tokens across multiple chains.
Every Cub is an AI companion. Power Orbs extend its memory, creativity, knowledge, reasoning and vision, turning your Cub into a helper you can actually talk to.
Ethernal Cubs (E-Cubs) are fully customizable, AI-powered NFT characters on Robinhood Chain. You open an Orb, receive random character parts, and assemble them into your own Cub, then talk to that Cub as an AI companion. Parts can be swapped at any time, and Cubs battle head to head with combat stats derived from the parts you equip.
A sealed Orb. Ethernal Cubs is a build-your-own collection, so the mint gives you an Orb rather than a finished character. You open the Orb at ethernalcubs.ai and it yields seven random parts, or eight from Gold upwards, which you assemble into your Cub. No single Orb fills all eight slots, so most players open a few or trade for the part they are short of. Orbs come in five tiers: Bronze, Silver, Gold, Diamond and Sapphire. The tier stays sealed until you open it.
Nothing. Both mint stages are priced at 0 ETH, so you pay only network gas, which on Robinhood Chain runs to roughly a cent. The mint is free, but it is not open to everyone: you have to earn your spot.
Any standard Ethereum wallet, such as MetaMask. You just add the Robinhood Chain network. Gas is paid in ETH. Nothing needs to bridge from Aptos: holding a Proud Lions Club or GUI Lions NFT qualifies you for a whitelist spot, and the Orb itself mints on Robinhood Chain.
Ethernal Cubs are built on Robinhood Chain, an Ethereum Layer 2 network. Robinhood Chain launched on 1 July 2026 and supports standard Ethereum wallets.
There are 155 interchangeable parts across 8 categories (background, body, equipped, eyes, face, inventory, mane and tail), giving more than 13,250,000,000 possible combinations. Parts are swappable, so your Cub is never locked to the way it minted: you can keep rebuilding both its look and its combat stats.
Each Cub is an AI companion you can talk to. Its abilities are extended with Power Orbs (Memory, Creative, Knowledge, Wisdom and Vision) which unlock capabilities such as longer conversational memory, creative writing, knowledge retrieval and image understanding.
Yes, through prizes and giveaways. Battles, tournaments, games and community events come with prizes, and more than $100,000 in NFTs and tokens across multiple chains is set aside for them around the launch. Proud Lion Studios has already returned over $40,000 to its community since 2022, burned $60,000 of $GUI Inu and given away a further $30,000.
There are 3,333 Orbs. Spots are earned, not open to everyone. You qualify in one of four ways: by holding a Proud Lions Club NFT on Aptos, by holding a GUI Lions NFT, by earning a spot through community activities and games, or through a partner collaboration. The whitelist is live at ethernalcubs.ai.
Yes. Ethernal Cubs is a completely free mint, and there is no purchase price for an Orb. However, the mint is not open to everyone: you must earn your spot. Allocation goes to holders of Proud Lions Club NFTs on Aptos, holders of GUI Lions NFTs, community members who earn spots through activities and games, and partner collaborations.
Ethernal Cubs is built by Proud Lion Studios, a UAE-registered studio in Dubai. The team previously launched Proud Lions Club on Ethereum in 2022, which included one of the earliest fusion NFT mechanics on Ethereum, then migrated the collection to Aptos, launched GUI Lions, and has distributed over $40,000 in community rewards through events, games and its own on-chain games.
Ethernal Cubs home ยท Earn a whitelist spot