Komushi (コムシ, Komushi) is the first known human puppet created by Sasori, while he was still an active Sunagakure shinobi. The puppet was made out of the corpse of Sasori's only friend, Komushi, after his death. While Komushi's death was ruled accidental, it was suspected that Sasori was responsible for his death in order to use him as a human puppet prototype.
Being a human puppet, it is highly likely that this puppet retains his chakra and any abilities he possessed when he was alive.
The puppet's left arm could extend a hidden poisoned blade from the palm to strike at the enemy with a quick stab. It likely maintained the same mechanism and poison in its right arm from when he was alive.
Since Komushi's right arm and part of his chest were shown discoloured from accidentally poisoning himself, it is likely the corresponding areas on the puppet also have poison.