The Ukpan obọ eva (coral-bead crossed baldrics) were worn as part of the ehaingbehia, the full ceremonial regalia, by only high-ranking members of the palace, including the Ọba himself, the Iy’Ọba, the Edaiken, and the Ezọmọ (Ben-Amos 1999, pp. 68, 141; Osadolor in Plankensteiner 2007, cat. no. 70, pp. 322–323).

Iwu are facial and body markings (scarifications) that were historically worn by Edo men and women. However, since the 1960s, the practice has been nearly extinct (Aisien 2011). In the past, Iwu were used as a way of proving that one was an Edo citizen, and the ceremony of having Iwu completed was an important rite of passage for men and women. The Osiwu, who also practised circumcision and other surgical procedures, would carry out the procedure of adding Iwu. There are different types of Iwu: ‘blades’ worn on the torso (Iwu-eko), and those worn on the face, such as Ikharo (three or four markings above the eyebrows), Irho (two narrow ‘blades’ worn on each cheek), Ovbihue (nasal ‘blades’), Ovbi-agbanmwen (chin ‘blade’), and Igho-okpa/Ukpgho (three forehead ‘blades’) (Aisien 2011, p. 22).

The number of Iwu also varied depending on the identity of the person wearing them. For example, royal men would wear six ‘blades’ on their torso, whilst men who were not royal would wear seven ‘blades’. Meanwhile, the Ọba’s female children would wear fifteen ‘blades’, and all other women would wear sixteen (Aisien 2011).

The Emada (singular: Omada) are palace pages who serve the Ọba and belong to the Iwegue Palace Society. Standing at the Ọba’s side, they carry the stately Ada (ceremonial sword) during public appearances and are therefore sometimes referred to as “Ada bearers” ( ). Emada typically served the Ọba for between six and twenty years, beginning in childhood. At the end of their service, the Ọba would provide each Omada with a wife and a plot of land, formally releasing him from palace service and marking his transition into adulthood (Kaplan 2007, p. 149).

Although the institution of the Emada predates his reign, Ọba Adolo was the first to allow his palace pages to train in woodcarving. This led to the development of a distinctive carving style and visual language that differed from that of the Igbesamwan, the royal guild of wood and ivory carvers.

Emada are consistently depicted naked, signifying their unmarried status ( ; ), and are most commonly shown accompanying representations of the Ọba. In addition to carrying the Ada, they may hold Ẹzuzu (fans), used to cool the Ọba, or Ugianranran (manillas), which signal wealth and overseas trade ( ). Emada appear across several types of Emwin Arhe (royal treasures), particularly Ama-Ẹrọnmwọn (bronze relief plaques), Aken'ni Elao (carved tusks), and Urhotọ (altar tableaux).

The Ada is a symbol of authority usually borne in the presence of the Ọba by a designated holder, the Omada, which translates as ‘Ada bearer’. The Ọba has almost exclusive rights to the use of the Ada, except when he permits titled chiefs, such as the Oliha, to possess one. During the Ogiso period, predating the current Ọba dynasty, the Ada is said to have been a symbol of ancestral power, with the ability to control the future (Ben-Amos 1995, p. 25). The Ada is ranked higher than the Ẹbẹn, another symbolically important ceremonial sword.

Ikele is a single stiff string or circlet of coral beads. It is worn by chiefs, such as senior chiefs who have been made Enigie (Inneh 2007, p.107), and is a sign of nobility and rank. The Ikele may only be worn once the Ọba has conferred a person with the right to wear the beads, and the Ikele must always be worn when appearing before the Ọba. According to Ekhaguosa Aisien (in Plankensteiner 2007, cat. nr. 301, p.512) when a chief is wearing the Ikele, they may not eat nor drink in public, and they “constitute an embassy of the Benin Palace wherever he might be.”

The Ititi ako is a cluster of coral beads, usually three or four, attached to a pin and used to embellish the royal crowns on Uhunmwu-Elao (commemorative heads) and Uhunmwu-Ẹkuẹ (pendant masks). These bead clusters are also known as star beads, which indicate the prosperous destiny of an individual or wearer. Apart from enhancing the appearance of the wearer, they also represent the individual’s high social status. Judging from their presence on a variety of head sculptures, both men and women wore Ititi ako.

The Udahae is a forehead band made from coral beads and worn by chiefs. Sometimes a white Igan (feather) from the Oɛɣohɔ (vulturine fish eagle) is tucked into the left side of the Udahae. According to Benin oral tradition, the Udahae was introduced by Ọba Ezoti, the first son of Ọba Ewuare I. During his coronation, Ezoti was shot in the forehead with a poisoned arrow. To stop the bleeding, a band of red beads was wrapped around his forehead while he made public appearances. Fourteen days later, he died from his wound. Since then, Benin chiefs have worn the red-beaded Udahae around their foreheads to commemorate the cap used by Ezoti to stop the bleeding (Egharevba 1968, p. 21).

The Ọba is the monarch of the Edo people and Kingdom. The current reigning monarch, Ọba Ẹwuare II, is the fortieth Ọba of the current dynasty, which is traditionally understood to have begun around 1170 AD ( ). Over the centuries, the role and conception of the monarch have shifted, and the Emwin Arre (royal treasures) and the visual language they carry provide important evidence for understanding these developments. Although Emwin Arhe served a variety of functions within court life and ritual, “their primary purpose was to glorify the godlike king and the history of the powerful empire” (Plankensteiner 2007, p. 25). Representations of the Ọba are therefore ubiquitous across Benin court arts and frequently occupy a central position within their visual language.

Representations of the Ọba can be recognised through a combination of characteristics, including his size, as he is usually depicted larger than other figures, and his position within compositions, where he may appear in front of or be supported by other figures, as in the Royal Triad motif. The Ọba is also distinguished by particular items of regalia, including the Oro projection from his crown, the distinctive beaded swag extending from his right hip, the Ewu ivie (coral-beaded shirt), and Ukpan obọ eva (crossed coral-beaded baldrics).

Since the early 20th century, scholars have sought to identify individual Ọbas represented on Emwin Arhe by analysing the regalia and other attributes of figures identified as monarchs, as well as the combinations of motifs and figures appearing on particular objects. Oral traditions and historical accounts, alongside European archival sources, have also played an important role in determining the identities of specific Ọbas (e.g., , ; ). Just as the institution of the monarchy developed and changed over time, so too did the ways in which Ọbas were represented by artists working within the royal guilds, including the Igun-Ẹrọnmwọn and Igbesamwan.