Complex sentence: When transformed into Streex, he becomes a tiger shark, named after the purple streaks on his body; but in episodes 1-3, he was called "Blades" for his skills as a rollerblader.
Split into simpler sentences: When transformed into Streex, he becomes a tiger shark, named after the purple streaks on his body. In episodes 1-3, he was originally called "Blades" for his skills as a rollerblader.