Can this be obtained later on the game?

those this imp spirit do bleed damage? like the enemy version does

they do bleed buildup yes and its a pretty hefty amount of damage mine did 1500 to a boss just from the bleed maxing out and the you know bleed out occuring

For me, these guys were the best choice as a keepsake. Definitely one of the better Summons, especially early in the game. These two Stone Imps act just like their counterparts, except when in range they'll also lob glintstone grenades. The fact that they have ambush tactics, and are rarely attacking the enemy from the same front, increases how long they are able to survive, so also makes them more useful in fights, lasting longer than others do.

Inflicts bleed

The nomadic merchant is actually behind the southern academy gate, you can reach him by following the road east from the academy main gate Grace, past the seal, theres a ****load of wolves along the way, merchant also sells the cookbook for sleepbone arrows and sleep grease, some stone sword keys, and the warrior armor set

Very powerful! My main spirit!

My main summon. If a boss can bleed, then these little fellas can do it about 2-3 per boss fight if I keep the aggro on me. They are always jumping sideways, hurling grenades or darting out after hitting so they last a long time and steal a bunch of the bosses attention too. Mixing these guys with a morning star and some kukri and even high level bosses get pretty destroyed by my low level guy.

Can be obainted later in the game