Terec and Ceret are Kotabi bond-twins and Jedi Knights stationed aboard Starlight Beacon, created by Cavan Scott for Marvel's The High Republic and introduced in its second issue. Their bond gives them a shared gestalt mind: they finish each other's sentences whether or not they are in the same room, and what happens to one registers in the other.
Both are trans non-binary, confirmed by Lucasfilm in a Star Wars Instagram post for International Transgender Day of Visibility in 2021, which paired them with Javier Garrón's Pride Month variant cover for issue 6. They are usually catalogued as two characters; this log keeps them in one entry, because separating a gestalt is the one thing the comic never does.
Catalogue entry. This figure has a verified record here rather than a full write-up — the encyclopedia labels its own depth instead of padding it.