KC3 characters are U32 encoded Unicode codepoints. They have a litteral syntax enclosed in simple quotes, just like in C.
ikc3> '𐅀'
'𐅀'
ikc3> type('𐅀')
Character
ikc3> '🎳'
'🎳'
ikc3> '😄'
'😄'
ikc3> '🟣'
'🟣'
ikc3> '🤩'
'🤩'
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