AAAHH!!! Real Monsters (1995) was a line by Mattel released in conjunction with Mattel's partnership with Nickelodeon. The deal saw Nick Toons in figure form from 1995 until at least 2000.
This line of Real Monsters figures was a 11 figure assortment of only one series. Included in the lonely series of monsters was The Gromble,
Sproink & Groink,
While all figures can be considered rare at this point, the most valuable are the primary characters of Krumm, Oblina, Ickis, and The Gromble.