Miniroons (or, Miniluns) are tiny Bubble Dragons first introduced in Bubblun March. They also appear in Bust-A-Move Islands.

They are a lot like normal Bubble Dragons, except they are stunted in size, and lack claws.

In Bust-A-Move Islands, Miniroons need rescuing in order to build things for their home, Miniroon Park. Special playable Miniroons can also be rescued. Each playable Miniroon has their own unique ability, a lot like the gatcha characters.