I'd have to agree with what many other reviews say about this short series: it has a harmful message and a protagonist who makes the same mistake over and over again. I went on this page to see if there are any other people who feel the same way about Nina Needs to Go as me, and I thought I'd point out its problems if nobody else would, but most of the reviewers mention some of the same thoughts on it I have.
The main problem I have with this is the plot. In every episode, the protagonist, Nina, is in public with her parents, and she doesn't have to use the bathroom at first, but she always has to go a minute later, hence the title. At first, she is in a crowded space, which makes it hard for her to get to the bathroom on time, but she always makes it on time with the help of her Nana, who happens to be a ninja. After Nina is done, she always says, "That will never happen again, because now I know, don't wait to go." Despite this, the same thing always happens again in the next episode, as if Nina didn't learn her lesson before, and she never listens to her body. Also, sometimes it's best to wait to go to the bathroom if one can hold it. Every episode feels the same. I think just because a show is formulaic doesn't mean it sucks, but formulaicness is beaten to the ground here. The only differences between all the episodes are that Nina and her family are always in a different place, and the title character comes across different things that remind her of the bathroom. Nina Needs to Go would've worked better as a one-off short.
Most of the characters have little to no personality, and very little is known about them. All we know about them is their names, their family positions, Nina always feels the need to use the restroom, and Nana is a very talented ninja. The latter is the only good character. Enough said.
Whatever you do, don't watch Nina Needs to Go. Surprisingly, there's no toilet humor in it, but that's not enough for me to like it. If you're looking for a show to help potty train your kid, this isn't the one.
