R/B Crystal Holders (ルーブクリスタルホルダー Rūbu Kurisutaru Horudā) are containers used by the Minato brothers to store their R/B Crystals. Rosso's side is called the R/B Crystal Holder Rosso (ルーブクリスタルホルダーロッソ Rūbu Kurisutaru Horudā Rosso) and Blu's side is the R/B Crystal Holder Blu (ルーブクリスタルホルダーブル Rūbu Kurisutaru Horudā Buru).
It is a simple case that opens up to reveal slots that store up to four R/B Crystals. The positioning of R/B Crystals are as follows:
- All four Ultramen that occupy the R/B Crystals are known to have associations with Ginga's host, Hikaru Raido. Additionally, they are also obtained around sometime after the Minato brothers did a selfless deed:
- Taro and Ginga: They risked their lives to save a young boy from Grigio Bone's onslaught.
- Tiga: They assisted Yuuha Ninomiya in constructing a pair of mechanical wings to fly.
- Victory: They rescued Asahi after she fell in the middle of a training.
|Ultra Powers, Traits and Objects of Interest|
|Traits and abilities||Ultraman Title | Ultra Beam | Ultra's Inner Light | Color Timer | Beam Lamp | Crest Weapons | Protectors | Ultra Horns | Bracers | Solar Energy Absorption | Forehead Crystal | Light Crystal | Zenshin Crystals | V Crystals | Ultra Armor | Mental Abilities | Ultra Signs | Human Hosts/Forms | Dimensional Field | Star Marks|
|Ultra-related Items||Transformation Items | Specium | Ultra Bracelet | Ultra Array | Ultra Bell | Ultra Key | Max Galaxy | Plasma Spark | Aarb Gear | Techtor Gear | Ultimate Aegis | Spark Dolls | Strium Brace | Ultra Fusion Brace | Knight Timbre | Cyber Cards | MonsArmor | Ultra Fusion Cards | Ultra Fusion Card Holder | Kaiju Cards | Ultra Capsules | Ultra Capsule Holder | Kaiju Capsules | Childhood Radiation | R/B Crystals | R/B Crystal Holder | R/B Crystal Collection Case | Ultra Taiga Accessory|
|Manga Only||Plasma Ore | Ultraman suit | Ultraman Factor|