Purple Blob

Xp
$$\text{TotalXP} = \left\lceil{\frac{\text{CreatureLevel}}{2} \cdot \frac{\text{TotalDamage}}{30} + 1}\right\rceil$$

Lvl 5

 * T1 items

Misc.

 * T1 Potions
 * Regret Stones

Lvl 10

 * T1 Items
 * T2 Items

Misc.

 * T1, T2 Potions
 * Regret Stones

Trivia

 * The Strong Blob used to be level 11, but was changed in a later update