Special Part(s): GD_Iris_SeraphItems.BigBoomBlaster. Iris_Seraph_Shield_Booster GD_Iris.SeraphItems.BigBoomBlaster.Iris_Seraph_Shield_Booster_BalanceGD_Shields.Accessory.Accessory4_Booster GD_SeraphItems.BigBoomBlaster.Iris_Seraph_Shield_Booster_Material [Big Boom Blaster Variants] Big Boom Blaster is a Seraph Booster Shield manufactured by Torgue. The Big Boom Blaster can only be obtained from trading with the Seraph Vendor in the Badass Crater of Badassitude in True Vault Hunter Mode and Normal or as a rare drop from Pete the Invincible in Ultimate Vault Hunter Mode.