There’s a specific memory I’ve carried around since childhood that I only fully understood much later. I remember watching an animated series on HBO… Dorothy in a world that looked somehow more detailed, more cinematic, and more emotionally sincere than the cartoons I was used to on Saturday mornings. It wasn’t the 1939 Judy Garland film, and it wasn’t any American cartoon I could place. It was The Wonderful Wizard of Oz, a 52-episode anime series originally produced in Japan by Panmedia and aired on TV Tokyo in 1986. HBO purchased the rights, had it dubbed into English by Canadian studio Cinar, and broadcast it in the United States starting in 1988, with actress Margot Kidder narrating and all Japanese credits conspicuously removed from the production.

I had no idea any of that was happening behind the scenes, of course. I was just a kid watching Dorothy navigate the Land of Oz across multiple books’ worth of story, and I remember thinking: why doesn’t all animation feel like this?

That question, it turns out, a lot of American kids were quietly asking at the same time.

The Invisible Import Era

Here’s the thing about anime’s infiltration of American television: for a long time, nobody called it that. The word “anime” wasn’t part of the average American child’s vocabulary in the 1970s or early 1980s. What we had instead were just… cartoons. Cartoons that occasionally felt a little different. More serialized. More dramatic. With animation that moved in interesting ways and storylines that actually went somewhere.

Astro Boy was arguably the trailhead of the whole phenomenon. The series premiered in Japan on January 1, 1963, and by September 7 of that same year, NBC was syndicating it across the United States. Created by Osamu Tezuka, the show followed a robot boy built in the image of a scientist’s dead son… not exactly the premise of a typical American Saturday morning offering. Most viewers had no idea it originated in Japan, and NBC made sure of that, localizing the names and editing the content for American tastes.

Speed Racer arrived in 1967 with a similar sleight of hand. Originally titled Mach GoGoGo, the series was acquired by syndicator Trans-Lux, retitled, dubbed into English by producer Peter Fernandez (who also voiced Speed Racer and Racer X himself), and sent out into American living rooms without much explanation of its origins. The show’s breakneck pacing and serialized racing storylines were unlike anything produced domestically at the time, and it made an impression that lasted generations.

This was the pattern of the era: Japanese animation arrived in America wearing an American costume. The seams were there if you looked… the lip-sync that never quite matched, the occasional flash of a style too fluid or too dramatic for American production norms. But most kids weren’t looking. They were just watching.

Nickelodeon and the Cartoons I Didn’t Know Were Anime

I came to this story personally through Nickelodeon in the mid-to-late 1980s. Two shows in particular live in my memory from that era, and for years I couldn’t have told you they were Japanese.

The Mysterious Cities of Gold began airing on Nickelodeon on June 30, 1986, having originally been co-produced by DiC Entertainment and Studio Pierrot and broadcast in Japan on NHK back in 1982. The show followed a young boy named Esteban traveling through 16th-century South America in search of the legendary cities of gold, and it was genuinely unlike anything else on television. It had narrative weight. Things mattered. Characters grew. Looking back, it’s the serialized storytelling that stood out… the sense that you couldn’t just jump into any episode and know what was going on. That was a distinctly Japanese storytelling sensibility finding its way into American cable TV.

The Little Prince and the Eight-Headed Dragon was another Japanese production that floated through that era of children’s programming, part of a broader wave of anime-inflected content that populated cable channels without any particular fanfare about its origins.

The common thread in all of this is invisibility. The anime of the 1960s through the 1980s succeeded in America largely because it didn’t announce itself as foreign. It was just… there. Part of the landscape. Kids absorbed its storytelling rhythms and visual language without knowing there was a name for any of it.

The 1990s: When the Curtain Came Down

At some point in the early 1990s, the dynamic shifted. Japanese animation stopped sneaking into American living rooms and started knocking on the front door.

Sailor Moon was perhaps the most significant turning point for an entire generation of viewers, particularly girls. The DiC Entertainment English dub premiered in the United States on September 11, 1995, and while it initially struggled in syndication, the series found its audience. When it moved to Cartoon Network’s Toonami block in 1998, it exploded. Here was an action cartoon centered entirely on female heroes… not sidekicks, not comic relief, but the actual protagonists. And it proved that this audience existed and had been underserved for years. The DiC dub made significant alterations to the source material, including changing character names and removing various cultural elements, but the core appeal survived the translation: found family, emotional stakes, and the idea that being a teenage girl was complicated and worthy of dramatic exploration.

The same Toonami block became ground zero for Dragon Ball Z. The series had actually been in American syndication as early as September 1996, but it failed to find traction. Everything changed on August 31, 1998, when Cartoon Network began airing it on Toonami. Suddenly DBZ wasn’t just a show… it was an event. Kids were comparing power levels at lunch. Fight scenes that stretched across multiple episodes became a cultural ritual. The show introduced American children to the concept of an anime storyline that didn’t reset at the end of every episode, where consequences accumulated and characters actually changed. That sounds like a low bar in retrospect, but in the landscape of American Saturday morning television, it was revolutionary.

And then there was Pokémon.

The Pokémon anime premiered in the United States in syndication on September 8, 1998, and by February 13, 1999, it had landed on Kids’ WB, where its debut episode became the most-watched premiere in the network’s history. By April 1999, there was a cultural phenomenon happening that defied easy categorization. It wasn’t just a TV show. It was a video game, a trading card game, a toy line, and a playground obsession that crossed every demographic. Kids who had never thought about animation as a medium were suddenly very invested in the question of whether Ash would ever win a Pokémon League tournament.

What Pokémon did that earlier anime imports hadn’t quite managed was achieve full mainstream penetration. Sailor Moon built a devoted fanbase. Dragon Ball Z created a subculture. Pokémon became unavoidable in a way that nothing before it had been.

The Toonami Effect

It’s worth pausing to credit what Toonami actually did during this period, because it was genuinely transformative programming.

Cartoon Network launched Toonami as an afternoon action block in March 1997, and what it provided was context. For the first time, American kids had a dedicated space that said, in effect: this type of storytelling has a home here. Serialized action. Ongoing narratives. High stakes. Consequences that lasted. Gundam Wing brought giant robot anime to American audiences who hadn’t encountered the genre. Tenchi Muyo! demonstrated that anime contained multitudes… comedy, action, romance, science fiction all at once. Outlaw Star offered something with the cinematic ambition of a space opera. Yu-Gi-Oh! became another multimedia juggernaut in the Pokémon mold.

Toonami didn’t just air anime. It curated an aesthetic and trained a generation of viewers to expect more from their cartoons than they had been getting from the American domestic product.

What Did It Actually Change?

It’s one thing to catalog the shows. It’s another to ask what the lasting influence actually was.

American animation changed in ways that are easy to see in retrospect. The episodic, reset-every-week format that dominated Saturday mornings for decades gave way to more serialized storytelling. Continuity became expected rather than exceptional. Characters developed across seasons rather than remaining static indefinitely. Emotional stakes became permissible. Characters could lose, struggle, and carry the weight of those experiences forward.

You can draw a fairly straight line from Star Blazers building on its serialized storyline in 1979 to the prestige television era’s expectation that even animated series will have season-long arcs. That didn’t happen in a vacuum. It happened partly because generations of American kids grew up on Japanese animation and came away with different expectations about what the medium could do.

There’s also something worth acknowledging about the scope of what anime offered. Not just robots and ninjas, though yes, those too, but genuine emotional complexity, found family narratives, stories that treated young audiences as capable of handling something real. The best anime that reached American shores in the 1980s and 1990s didn’t talk down to its viewers.

The View From Here

I think about that kid watching The Wonderful Wizard of Oz on HBO and thinking: why doesn’t all animation feel like this?

The answer turned out to be that it eventually would. Not entirely, and not all at once, but the trajectory was clear. By the mid-2000s, Naruto had arrived to cement what was already obvious: Japanese animation wasn’t a curiosity or a foreign import anymore. It was part of the fabric of American children’s media, woven in so thoroughly that you’d have to pull a lot of threads to separate them.

The invasion, if that’s even the right word for something that quiet, that gradual, and that welcomed succeeded completely. And for those of us who watched it happen one Saturday morning at a time, it’s hard to imagine growing up any other way.

What anime series first made an impression on you as a kid… whether you knew it was anime at the time or not? Drop your answer in the comments.