Marie is one of the members of the most popular idol group in Inkopolis, the Squid Sisters. She will be an important character later on in the series. 

Overall, Marie is more chill and quiet than Callie. She is laid-back friendly but sometimes grumpy. She can be really lazy but as Agent 2 of the New Squidbeak Splatoon, she uses the opportunity to make the team proud by coming up with plans for the team. Her voice should be a little laid back as Marie in the Squid Sisters but more serious as Agent 2 of the New Squidbeak Splatoon.

For this line, she's saying this in her head as she looks up at the tower while Callie finished her announcement.

More info: https://splatoonwiki.org/wiki/Marie

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