SV Snaggerjag appears as the top half of a stout, green-skinned humanoid Yo-kai emerging from a wooden sailboat. He has curly black hair, bushy eyebrows, a beard and mustache, and glaring yellow eyes, with a frowning mouth full of sharp teeth. He wears an orange happi with green accents and a white wave pattern, and a fishing rod with a dangling line and hook is attached to the top of his head, with a headband tied at the base. His boat flies a purple square rig with the kanji for "treasure" (Japanese: 宝,Takara) inside a circle painted in white. His hair also goes up on the left and right which it curves to look like demon horns.
His befriendable form, however, loses most of his boss form's features, losing the kanji on his sail, his hull is smaller, his facial hair is reduced to a soul patch, and his eyebrows loses the horn feature on his boss form.
SV Snaggerjag is stiff and doesn't like it when people or Yo-kai mess around in the pond because he is afraid it will scare the fish away.
Skill: Lake's Guardian-Takes in all water damage and heals himself with it.
He brings bad luck to anglers and can command the fish that live in his lake.
Go to the Mount Wildwood summit and talk to the lady on top to receive the Fleshy Souls only request "At The Cost of An Iron Doll".
Get an iron doll, which can be found in the grass in a variety of locations, and then go to the waterfall under the Mount Wildwood bridge. Interact with the water to summon SV Snaggerjag.
After a brief cutscene, SV Snaggerjag will attack. A level 30-35 team of Yo-kai is recommended. After defeating him, he can be fought every day. he does not approach you like in the normal way of befriending Yo-kai. Instead, his dialogue will change after the fight and he will give you his medal.
SV Snaggerjag, along with Sproink and Slimamander, were befriendable in the Befriend-a-Boss event, and their fusion items were available in the crank during this period as well.
His Japanese name, "Tsuraretarō-maru", is a combination of tsurareru (釣られる, "to be reeled in"), Tarō (太郎, common male name), and maru (丸, "circle", but also typical suffix used for names of ships and swords). His English name, "SV Snaggerjag", is a portmanteau of snagger and jag preceded by the naval prefix SV (Sailing Vessel).