Complex sentence: Some speculate that Tomino had a soft spot for Cham and felt like putting a near identical character in another series--a rarity for Tomino, who often goes to great lengths to make sure characters are not be reused.
Split into simpler sentences: Some speculate that Tomino had a soft spot for Cham, and felt like putting a near identical character in another series. A real rarity for Tomino, who often goes to great lengths to make sure characters cannot be reused.