Giri’s main rival in Band Melam appears to be the rival club head , played by Ashutosh Rana. The available plot summaries point to Giri and Raaji as the central pair, with the conflict coming from a competing local music/club figure rather than a “rival” named as another lead character.

What the story says

  • Giri stays in the village and builds a band/music life around him.
  • The film’s conflict includes a rival club head in the supporting cast.
  • Most descriptions focus more on Giri vs. changing life paths and Raaji’s studies than on a single named enemy.

Likely answer

If you mean the person opposing Giri in the story, it’s Ashutosh Rana’s rival club head role. If you mean a named character specifically called Giri’s rival, the public summaries I found do not clearly give a separate name.