Max Modem and the Mainframes is a new band created by Phineas and Ferb for Lawrence Fletcher and appeared in Ladies and Gentlemen, Meet Max Modem!. It was created when Lawrence got worried that Linda would be bored with him, because of all the cool hip new people she would meet at her Lindana reunion concert.
- Lawrence Fletcher (Lead singer, keytar)
- Phineas Flynn (Guitar, background singer, dressed as a robot)
- Ferb Fletcher (Keyboard, background singer, dressed as a robot)
- Background aliens (Dancers; not technically members of the band, created by Doofenshmirtz).