If Bowser is riding in a Koopa Clown Car, he pursues Mario while breathing fireballs at him. Bowser can also throw two Bob-ombs at Mario, which self-destructs after a while; if Bowser is giant-sized, he throws up to four Bob-ombs. This behavior is constant for all game styles. Game & Watch Gallery 4 also has Bowser in the Modern version of Rain Shower. Here, he is seen in a tree, trying to throw colored water balloons at Mario's friends, who are relaxing on various objects attached to the ropes. Mario is able to help his friends avoid the balloons by using the ropes to move them out of the way.

Bowser is one of the characters that appears in the Japanese-exclusive arcade game Mario Party Fushigi no Korokoro Catcher. During Fever Chance, if one of the player's results is Bowser, he appears. With the game being based upon Mario Party 8, Superstar Showdown is also a playable minigame in this game. Bowser also makes an appearance in the three Mario Kart Arcade GP games; Mario Kart Arcade GP has no weight stat to classify characters by, but Mario Kart Arcade GP 2 classifies him as a power racer, and Mario Kart Arcade GP DX places him in the heavyweight category. The second game also gives him a personal kart in addition to a standard kart; Bowser's resembles his shell, with spikes lining the sides and on the tires. In the first two games, Bowser has four special items: Bowser Shell, the same item from Double Dash!!; Shell Body, which makes him invincible; Flaming Tender, which damages any rival that hits it; and Thwomp, which squishes any driver that drives under it. Bowser also receives his own two-course cup in the first two games, both of which consists of Bowser's Castle and Castle Wall, which takes place on the wall surrounding his castle. In the first game, beating the Bowser Cup allows the player to face Bowser in a battle as the challenge stage. The player must leap over the streams of fire Bowser spits at them while tossing shells at the supports for his platform. If the player is playing as Bowser for this challenge, they instead face Mecha-Bowser. In Mario Kart Arcade GP DX, the Bowser Cup consists of Bowser's Factory and Bowser Castle. Various other relatives of Bowser's have been mentioned or shown in a minor capacity throughout the franchise. Bowser mentions a father in few issues of the Nintendo Comics System Super Mario Bros. series, with the implication being that he is a wanted criminal on the run. Bowser is first shown to have a mother in The Super Mario Bros. Super Show! episode " Do You Princess Toadstool Take this Koopa...?", which depicts her to be a bossy and bullying woman who resented her son for remaining a bachelor. Mario's Time Machine Deluxe for MS-DOS, however, shows another version of Bowser's mother, who is an elderly librarian, in the included Library program. Bowser also mentions a grandfather named Poopa La Koopa in the Super Show episode " Butch Mario & The Luigi Kid", saying his motto was "Cheat, beat, and be merry!". In the " Raiders of the Lost Mushroom", Bowser claims that his " great-great grandkoop" built the Temple of Koopa to hide the Lost Mushroom, which he left to Bowser. In an episode of The Adventures of Super Mario Bros. 3, Morton brings up one of the Koopalings' great grandmothers. Bowser and the Koopalings are shown to have a pet rabbit named Pookie in the Nintendo Comics System series, which was often abused until its eventual escape in the comic " Bowser Knows Best". In the Nintendo Adventure Book Flown the Koopa, a Magikoopa stated to be Bowser's third cousin twice removed is featured as the main antagonist; this character also appears in the later books Unjust Desserts and Brain Drain, though he has only minor roles in both. Finally, in both an episode of the Super Show and the song " Ignorance is Bliss", Bowser mentions a younger sister who is, according to him, a bookworm. In Mario Party DS, Bowser invites the Mario gang, Donkey Kong, and Diddy Kong to his castle for a banquet, stating in the invitation that it is an apology for his wrongdoings. When Mario and his friends arrive at the castle, however, they are captured. Wanting to steal Mario's Sky Crystal, Bowser uses his Minimizer to shrink them and have Kamek throw them out. Bowser reprises his role as a playable character in Mario Super Sluggers as a team captain and in the Power category. Once more, his batting and pitching are excellent, but his fielding and speed are on the down-lows.Bowser is also faced on the final stage and special stage on Stage Clear mode. His health is depleted by stringing together multiple combos. Bowser often works together with Dr. Eggman during the Mario & Sonic series, often causing trouble to disrupt the Olympics or defeat their nemeses, Mario and Sonic. Bowser and Eggman mutually treat each other as equals in their partnerships as well as friends, which is prominently shown in London. In Tokyo, Bowser trusts Eggman's comprehension of Tokyo '64 when they end up trapped in the game so they can outwit Mario and Sonic and escape. Alpha and Beta Kretin X • Biffidus X • Bowser X • Bowser Memory MLX • Dark Satellmite X • Dark Star X • Durmite X • Junker X • Junker Can X • Wisdurm X Bowser is also given a role in the three Bowser minigames, which take place on a purple, mountainous statue of his head. In Cage-in Cookin', Bowser roasts any players that fail to escape their cage in time. In Rain of Fire, Bowser uses his fire breath to activate the cannon that shoots debris down on the field. Finally, in Scaldin' Cauldron, after all the players jump into one of the three cauldrons, Bowser enters the room and breathes fire upon two of them; players inside the cauldrons he burns lose.

Inside Bowser's quarters in the second castle, Mario discovers the princess bound to the flagpole and tries to rescue her. However, Bowser falls out of the sky and attempts to ground pound him from above, which causes the floor beneath them to fall.

In Mario Kart: Double Dash!!, Bowser's default partner is Bowser Jr. Their shared Special Item is the Bowser Shell, and his kart is the Koopa King.