A: No. Hotstar currently does not have the license for Zatch Bell in Hindi.
A: Slightly. The Hindi version on Cartoon Network removed most blood and changed "die" to "defeated," but the emotional impact remains intact.
If you are searching for you are likely experiencing a heavy dose of nostalgia. You remember the lightning spells, the bizarre red-haired demon Kiyo, and the lovable king-in-training, Zatch. But finding the complete first season in Hindi has become a modern-day treasure hunt.
ThePornDude