Mini/Magic: The Gathering

Minis from the Magic: the Gathering continuum manifest as atogs. The wiki on MTGsalvation describes them as "small creatures known for their insatiable appetites and unusual diets. Atogs come in a very wide variety of forms, but most uniformly possess a humanoid shape, a reptilian or amphibian appearance, bulging eyes, and enormous toothy mouths."

Mini-atogs go up to the knee in their unfed form, but can grow to at least waist height.

Known mini-atogs
Since their diet's a defining trait for an atog, they're listed alongside the names.

Prince of Thralls

 * Prince of Thrulls: corpse parts.

Garruk Wildspeaker

 * Garrus: trees (?).

Jace Beleren

 * Beleran: stray thoughts.