Friends and EnemiesEdit
Bowser has many friends and enemies, including his partner in crime, Dr. Eggman the main villain of the Sonic series (crossovers only) and mostly his caretaker and second in command, Kamek. Bowser and Eggman were trying to ruin Mario and Sonic's fun by causing mayhem in the Mario & Sonic series. In Mario Party 9, he sends out Kamek & Shy Guy to play along in the adventure with Wario, Waluigi and others just so they can win the game and snatch the mini stars for himself and to run off with them. He has causing trouble for Mario and friends, including Wario & Waluigi themselves in the Mario Party series. At one point in Mario Power Tennis, Bowser, Wario and Waluigi teamed up to try and destroy Mario and Luigi in the Tennis tournament. However in Mario Super Sluggers, Wario Bros. are actaully had desires to kill the Mario Bros. when they put the Bullet Bill in the baseball machine and fire directly at Mario. But Bowser interrupts their plans and hit the Bullet Bill that sends them straight Back to Wario & Waluigi as he declares that he's the one who should kill Mario than those two does. Despite his rivalry with Wario in the spin-offs, Bowser teams up with Wario and the smashers to face the greater evil in Super Smash Bros. Brawl's Subspace Emissary much like how he does with Mario in the RPGs.