Antfrost

General Antfrost, you will join Leokoblin

Yes Sir. - Antfrost and Octo in Old Man Leokoblin

Antfrost was a member of an Unidentified Pirate Crew.

Pirates
Jack and Soto, in order to get resources, raid the crew's ships. Antfrost is spared by Soto and thrown overboard.

Old Man Leokoblin
Octo meets with Antfrost and teams him up with Leokoblin to hunt down Soto.