Sailing to Chilblain
The ore shipments have not been arriving to Berk from Chilblain, and Gobber is concerned, as the shipments are always on time. The Hairy Hooligans set sail for Chilblain to see if there is anything amiss. As they sail, Stoick orders "Jusken - Signal the other ships. Drop anchor and get the Dragons airborne."
Later, the ore shipments were found to be held up because Chilblain was under threat from the erupting volcano, Mount Ymir.
Jusken appears to be a skinny but acrobatic Hooligan Viking. He is an adult male with brown hair and a thick brown mustache.