Saving Bikini Bottom: The Sandy Cheeks Movie is proof that some characters are supporting for good reason. It's a zany, colourful, sugar rush of a film that's clearly made for an extremely young audience that constantly moves between being occasionally funny and constantly awful in a way that has its own rewards. Even at just under 90 minutes it's pushing its luck.
All the returning cast members have played these characters for so long that they're naturals at this. Any intentional laughs come from how loveable these characters are and Tom Kenny in particular remains endlessly endearing as SpongeBob. However, the performance that's the most memorable is easily Wanda Sykes, who is just awful from her first moments and manages to overact whilst phoning it in.
Liza Johnson's direction is bad, especially when compared to previous entries. It's very easy to see why this one has been sent to streaming since it looks noticeably cheaper than all of its predecessors with live action and animation blended in such a terrible way, some of which has to be intentional but that doesn't excuse it. The only part that looks competent is the opening set in Bikini Bottom.