Jiraiya. Since they are in a desert. I will give you an explination on how this will work.
Jiraiya summons Gamabunta / Gamaken / Gamahiro. (Frogs can jump, very, very, far. This will give them some seperation, and Jiraiya can pick two frogs to hold of Sasori.)
As Jiraiya and Gamabunta are running away, Jiraiya is going to summon Shima and Fukasaku. This will take a while, but the 2 other Boss Toads can buy time.
Jiraiya now has Ma and Pa, and Gamahiro / Gamaken are now probably dead, but took out Hiruko's body.
As Jiraiya is in Sage Mode, he tells Ma to use "Sage Art: Wind Release Dust Cloud"
Then they use together "Sage Art: Geomon" and Sasori is dead, along with Puppets. If not, Jiraiya has Sage Mode, and that means very good reflexes, better than Sakura and Chiyo.
Jiraiya summons Gamabunta / Gamaken / Gamahiro. (Frogs can jump, very, very, far. This will give them some seperation, and Jiraiya can pick two frogs to hold of Sasori.)
As Jiraiya and Gamabunta are running away, Jiraiya is going to summon Shima and Fukasaku. This will take a while, but the 2 other Boss Toads can buy time.
Jiraiya now has Ma and Pa, and Gamahiro / Gamaken are now probably dead, but took out Hiruko's body.
As Jiraiya is in Sage Mode, he tells Ma to use "Sage Art: Wind Release Dust Cloud"
Then they use together "Sage Art: Geomon" and Sasori is dead, along with Puppets. If not, Jiraiya has Sage Mode, and that means very good reflexes, better than Sakura and Chiyo.