General

If they can't be combined and don't give potential I don't see a reason for keepin 'em.

I'm assuming the monster with potentials come from boxes only?

It can't be combined, it needs Potential to be combined.

[quote=rushed]Yeah, but a lot of people's Crimson Rocks are sleeping, meaning they've been combined.[/quote]

Is is egg combine by chance?

[quote=steven7x23]Special monsters can not be combined.
Try it out yourself.
Or take a look at a monster's info if unsure if it is special.
Special monsters I have seen so far are Crimson Rock, Pink Bean and Mir.[/quote]

Yeah, but a lot of people's Crimson Rocks are sleeping, meaning they've been combined.

Mir can be fused with another Mir to make a more mature Mir o.o

Special monsters can not be combined.
Try it out yourself.
Or take a look at a monster's info if unsure if it is special.
Special monsters I have seen so far are Crimson Rock, Pink Bean and Mir.