Karen Morales has a degree in Law from Universidad Insurgentes, is an expert in both Forensic Graphology and Questioned Documents from Instituto Nacional de Desarrollo Jurídico (Inadej), and an English and French interpreter and translator. She has given lectures, seminars, diploma courses, and workshops at Instituto Givi Service, S.A. de C.V., Instituto Doctoral Universitario (Indoc), Centro Académico Especializado en Ciencias Jurídicas y Criminológicas, S.C., and Sociedad Mexicana de Grafología Científica, S.C. (Somegraf). Karen is co-author of A Dictionary of Graphology and Personality (2022) by Editorial Terracota, under their Pax imprint.

Jesús Celaya holds a Law degree from Universidad Nacional Autónoma de México (UNAM), and both a master's degree in Criminal Sciences and a PhD in Law from Instituto Nacional de Desarrollo Jurídico (Inadej). He is also an expert in Graphology from Colegio Mexicano de Grafología and in Questioned Documents by Inadej. He is also an interpreter of facial physiognomy from Instituto Nacional de Ciencias Penales (Inacipe). Jesús is co-author of A Dictionary of Graphology and Personality (2022) by Editorial Terracota, under their Pax imprint.