The Unwẹnrhiẹnọtan (switch) is made from branches of a tall shrub and is held by the Ọba and certain chiefs, such as the Osuan and Ooton, during sacrificial rituals and ceremonies, particularly Ugie Erha Ọba (B ). Figures carrying Unwẹnrhiẹnọtan are depicted in brass on the Ama-Ẹrọnmwọn (bronze relief plaques) and also carved in ivory on the Aken'ni Elao (altar tusk).

According to Barbara Blackmun ( ), the Unwẹnrhiẹnọtan “is required whenever the sacrifice of a living creature takes place within the Ọba’s palace complex, to drive away intrusive spiritual forces. The upright position of this essential implement suggests that the person who holds it is about to preside over a sacrificial ceremony.”

Figures wearing a headdress with a single protrusion from the crown of the head, known as the Oro, are found only among the Ọba and a select category of palace dignitaries whose ancestors originated in ancient Ile Ife ( ; Ọbazee 2025, p. 407). Only the Osa and Osuan, custodians of the Uwen and Ora deities, as well as members of the Emuru, who are responsible for the care of Iru vessels, may wear a headdress with the Oro. The identification of different figures is therefore interpreted based on the combination of the Oro with other items of regalia. Artists in the Igun-Ẹrọnmwọn and Igbesamwan depicted figures with the Oro on Ama-Ẹrọnmwọn (bronze relief plaques) and Aken'ni Elao (carved tusks), respectively. The Oro would either be made of coral beads as part of the crown or headdress, or be woven from itoto fibre ( ).

Odigba (coral-beaded collar) is a rigid neck collar made of coral beads, worn as part of ceremonial attire only by senior princes who have been made Enigie (Inneh 2007, p. 107). Although Ibafe (2007, p. 43) argued that the Odigba was introduced during the Ogiso period (c. 900–c. 1170 AD) by Ogiso Ere, along with other symbolically important Emwin Arhe, such as the Ada (ceremonial sword) and the Ẹbẹn (ceremonial sword), this seems unlikely, as coral was only introduced in the late 15th century through trade with Portuguese merchants.

Ėwùϙsዕtỏ is the Edo term for a long, woven garment (Ọbazee 2025, p. 144). The Osuan, the high priest of Uwen, and the Ooton may both wear the Ėwùϙsዕtỏ, making it difficult to distinguish between the two figures based on their attire alone. In depictions on Aken'ni Elao, figures identified as Ooton are more commonly represented than the Osuan specifically ( ). Both figures are also depicted holding Unwẹnrhiẹnọtan (switches) alongside the Ėwùϙsዕtỏ.

Today, neither the Osuan nor the Ooton wears the long gown, although both are associated with a distinctive hairstyle ( ). On ivory and brass Emwin Arhe (royal treasures), the Ooton or Osuan is depicted wearing the Ėwùϙsዕtỏ with his left hand placed on his chest, over a bulge beneath the gown. This bulge is understood to conceal the jawbone of the deceased Iyasẹ, which the Ooton wears. According to Barbara Blackmun ( ), because the Iyasẹ was the leader of the opposition to the Ọba, the jawbone became the “locus of the Iyasẹ’s disturbing dissent as he voices disagreement.” As a result, the Iyasẹ’s family was required to give the jawbone to members of the Ooton guild, who kept it in the royal palace.

Ebe Amẹ refers to a wide variety of plants, particularly the leaves of the water fern or river leaf, found in riverine areas of southern Nigeria ( ). Artists from the Igun-Ẹrọnmwọn used these as a decorative motif in the background of most Ama-Ẹrọnmwọn (bronze relief plaques). The petals of the Ebe Amẹ, like the points of the ἀghàdàgháda (crossroads), represent the four cardinal directions: north, east, south, and west. The number four plays a foundational role in the Edo calendar, which is structured around four market days ( ).

“Only Osa and the Osuan know what is in the palm frond” ( )

The title of Osuan is paired with that of Osa, and both were created by Ọba Ewuare I to protect the Ọba and the Edo people as a whole ( ). According to Inneh ( ), the Osuan is responsible for Ora, the deity associated with fertility. The Osuan is therefore responsible for ensuring the fecundity of the land and people of the Kingdom ( ).

During ceremonies such as Ugie and Oduduwa, the Osa and Osuan support the Ọba on either side, a pose that is frequently reflected in the visual language of Emwin Arhe (royal treasures) ( ). Both are often depicted wearing basketry headwear with a pointed Oro projection, similar to the headwear still worn by holders of these titles today ( ). The Osuan, as well as other members of the Ooton guild to which the titleholder belongs, are often depicted holding an Unwẹnrhiẹnọtan (switch) in one or both hands. This pose reflects the historical role of the Osuan during sacrificial ceremonies, when the Unwẹnrhiẹnọtan was held aloft to “fend off intrusive spirits that crowded around as the victim died” ( ).

During the Igue festival, both the Osa and Osuan wrap raffia palm cloth around their waists, which “indicate[s] the deep secrecy of the inner details of the palace worship and Ugie ceremonies” ( ).