As Atlantic Puffin only made a brief cameo in the 2017 anime, her personality here is closer to her Nexon Game counterpart. Besides snacking, she also enjoys flying, swimming, singing and dancing a lot. She is almost eternally happy as seen in her Kemotalks as well.
Atlantic Puffin can be encountered with ease in the Waterfront area. She has a high spawn rate at the Stage Lighting and various water Playthings there, such as the UMA Boat and the Blue Heart Floatie. However, outside of the Waterfront area, the player will find it much more difficult getting her to spawn. She seems to sometimes appear on the Mountain of Barrels, even if it is used outside the Waterfront.
Happy New Yeeear! Puffin-chan heard there's supposed to be this tasty thing called "osechi".
Trivia
Atlantic Puffin's in-game model was altered on March 1st, 2018, due to inconsistencies with her official art. The change was made to her gloves, which were flesh-colored rather than white. The change, however, is barely visible, even with comparisons.
References
Atlantic Puffin was announced to be appearing in Pavilion in a Tweet posted on November 8th, 2017.