Sangok

"water"

- Nice try, Pupil Sangok. A couple of more years and you might be ready to fight a sea sponge.

Pupil Sangok was an awkward teenager and student of Master Pakku's waterbending classes. Not being an admirable student, he was often caught daydreaming or wishing he was off playing ice marbles rather than training waterbending techniques.

History
Sangok and Katara were once matched up for a practice duel. Judging by his nervous expression at the start of the duel, it was evident that Sangok feared Katara's prodigious waterbending abilities. The spar started when Sangok formed and hurled a sphere of snow at Katara, who effortlessly melted it and repelled it back, freezing him, ending the match. Pakku sarcastically expressed his displeasure with Sangok's performance and unfroze him from his helpless condition.

Trivia

 * The name "Sangok" literally translates as "Third Individual" in Chinese or what the production business calls Extra #3. The word "sangok" could also be a variation of the Japanese word "sango" for "coral", which in fact goes well with Master Pakku's comment about him one day being ready to fight a sea sponge.