I mean, the description says it's lost media, so of course it's not available subbed or dubbed.

Episode 1 is available on YouTube with Spanish subtitles. AniDB claims that an English-subbed version of episode 1 is also available, but as of now, I have yet to find it.

An English dub aired on Nick Jr. from 1987 to 1993. There is a YouTube channel where you can watch most of the dubbed episodes, but not all of them.

Only episode 1 is available with English subtitles.

As of October 15, 2022, only episodes 1-18 are available with English subtitles. Two different English dubs, called 'Super Pig' and 'Super Boink', were produced, but neither dub seem to be available online.

Only episode 1 is available with English subtitles.

Only episode 1 is available with English subtitles.

Only episode 1 is available with English subtitles.

As of March 21, 2023, episodes 1-34 are available with English subtitles.

Only episode 1 is available with English subtitles.

As of November 11, 2022, episodes 1-26 are available with English subtitles (apparently).

On April 12, 2022, Digital Media Rights announced that sometime in April, May, or June, this anime will be available on RetroCrush in Japanese with English subtitles.[1] I believe it's safe to assume that the full series will be available then....whenever that happens.

Only 3 episodes are available RAW (according to AniDB, at least), but the English dub of this entire season of the Bakugan: Battle Planet series aired in Canada from February 16, 2020, to January 3, 2021, and in the USA from March 1, 2020, to March 21, 2021. I know episodes 1-51 are available on the Internet, but I've been struggling to find the last episode.

Only episode 1 is available with English subtitles.

Only episodes 1-3 are available with English subtitles. (Episode 4 is, too, according to AniDB, but I can't find it.)