Complex sentence: The most well-known appearance of Biyomon is in the Digimon Adventure anime as the partner of Sora Takenouchi, who also appears in the sequel series Digimon Adventure 02 and all the Digimon Adventure/02 related movies.
Split into simpler sentences: The most well-known appearance of Biyomon is in the Digimon Adventure anime as the partner of Sora Takenouchi. The Biyomon of Digimon Adventure also appears in the sequel series Digimon Adventure 02 and all the Digimon Adventure/02 related movies.