Bastion is one of the Tier 1 characters that the player can first partner with for the Tag Force tournament in Part 2. During Tag Duel Sundays, if the player is not Bastion's partner, he teams up with Chazz Princeton.
If not partnered with the player, Bastion teams up with Alexis Rhodes during Part 2, and is Tania's tag partner in Part 3.
Tag Force 2
Bastion is a Tier 2 character in Tag Force 2. There is an alternate version of Bastion in this game as a member of the Society of Light, which is unlocked as a partner if the player defeats him in Aster Phoenix's story.
Tag Force 3
Bastion is once again a Tier 1 character, and the player can team up with him. However, to do so right from the beginning of the game, they must perform a USB Connection with Tag Force as soon as a save file is created.
Bastion has two storylines in this game - Normal Bastion and Excited Bastion.
This Deck focuses on disrupting his opponent's Set cards and averting their attacks. Bastion uses this Deck during Part 2 in the Genex Tournament Finals and during Part 3 when brainwashed by the Shadow Riders.
This Deck focuses on negating his opponent's card effects, and Summoning "Swordsman Of Doom Lithmus". Bastion never use this Deck in-game. This recipe is rewarded to the player once you complete the Story Mode with Bastion as a partner.
Excited Bastion has two different Decks as a partner, and will switch from the first one to the second when he makes the player able to edit his Deck. Notably, both of his Decks use 3 copies of "Elemental Hero Stratos", which is Limited by default - if the player enters the Deck Edit screen to edit Bastion's Deck, they will have to remove the additional copies.