transformers shows and movies available on archive.org
some with captions/subtitles will play the captions in a browser, others need to be played with a media player that can play subtitle files

1986  The Transformers: The Movie: english audio, english audio, english audio with subtitles, spanish audio

1987  Transformers: The Headmasters: english audio

1988  Transformers: Super-God Masterforce: english audio

1989  Transformers: Victory: english audio, english captions

1989  Transformers: Scramble City: english captions and fandubs, english captions

1991  Transformers ZONE: english captions and fandub

1996  Beast Wars: Transformers: english audio, spanish audio

1998  Beast Wars II: portuguese captions

1998  Beast Wars II: Lio Convoy's Close Call!: english captions

1999  Beast Machines: spanish audio

1999  Beast Wars Neo: english captions

2000  Transformers: Robots in Disguise: english audio

2002  Transformers: Armada: english captions, english captions

2005  Transformers: Cybertron: english captions