Popeye was Popeye from the very beginning

Popeye the Sailor (1933)
Starring: William Costello (voice of Popeye), Bonnie Poe (voices of Olive Oyl and Betty Boop), and William Pennell (voice of Bluto)
Director: Dave Fleischer
Rating: Seven of Ten Star

While on shore leave, Popeye the Sailor visits a carnival with his girlfriend, Olive. When he decides to show off by getting on stage to perform with Betty Boop the Hula Dancer, his rival and shipsmate, Bluto, abducts Olive.

Most of the beloved classic cartoon characters go through several stages of development before becoming the ones everyone remembers of loves. Mickey Mouse, Betty Boop, and Bugs Bunny all had manifestations that are almost unrecognizable when put next to their famous incarnations. This, however, is not the case with Popeye, nor his main supporting supporting cast of Olive Oyl and Bluto. From their very first appearance in 1933, the characters, their relationships, and their appearances were pretty much as they would remain for the next 25 years worth of animated shorts.

There are three reasons for this that spring to my mind: First, Popeye was already been a popular  character in S.E. Segar's syndicated newspaper strip "Thimble Theater", so his look was mostly fixed. Secondly, Popeye's supporting cast, such as Bluto and Olive Oyl were already taking shape in the newspaper strip--although Bluto in particular came to life in the cartoons--and Popeye's animated debut was written by his creator, Segar, so the elements that were expanded upon were probably things he already had in mind. Thirdly, Kings Features (and possibly Segar) had final approval on every Popeye cartoon produced by the Fleisher Studios.

As for the specifics of Popeye's animated debut, although he, Olive Oyl, and Bluto are obstensibly guest-stars in a Betty Boop feature, Boop gets second billing behind Popeye and she has what amounts to an extended cameo as a topless hula dancer at a carnival. She's still pivotal to the plot, as Bluto has an opening to abduct Olive Oyl when Popeye engages in the ultimate act of pecocking when he gets on state and hula dances with Betty. The cartoon climaxes with a great variation of the send-up of silent movie melodramas involving a damsel in distress being tied to the railroad tracks, with Bluto tying Olive up with the railroad tracks.

Another interesting aspect of Popeye's debut is the way it puts him and his supporting cast firmly in Betty Boop's world where anthropomorphic animals exist side by side with humans. From Popeye's shipmates, to the majority of those attending the carnival, the minor characters and figures are "funny animals" of the typical Fleisher Studio design. As the "Popeye" series progresses, these beings quickly drop from view, but it's a fun notion to think that Betty Boop and the "funny animals" live on a particular continent, sort of like the Island of Goons from a later Popeye cartoon.

Usually with posts like this, this is the point at which I'd invite you to watch the cartoon being reviewed right here, in this post. However, "Popeye the Sailor" is still under copyright, and its owner, Warner Bros., guards it jealously. I recommend getting the DVD collection containing it, as the set is full of great classic cartoons. (Just be sure to watch them in sittings of two-three at a time, because most of them follow the same plot, and feature Popeye doing his signature stunt of hitting large objects and causing them to break into smaller, different objects, and they can start to seem repetitive, even if they are really quite clever.)