This paper will attempt to visualize adult refugees and migrants, as well as a specific multilingual and multicultural educational setting in Greece. This study aspires to depict/present the plurilingual profiles, language needs, and challenges of L2 Greek students through a variety of tools/methods, e.g., questionnaires, portraits, narratives, needs analysis, and assessment tools. In a complementary way, this research focuses on highlighting the value of language portraits, identity texts, and translanguaging in L2 Greek classrooms. Conditions regarding the educational process in the specific educational setting will also be discussed. This was a case study conducted in an open school for migrants in Greece. Eight volunteer teachers at the school and twenty students participated in this research through a multimethod research design. Multilingual profiles and learners’ needs and goals became visible, and the teachers managed to “hear” the multilingual voices of their students and understand their multilingual profiles. Overall, it is clear that these findings pave the way for large-scale research to investigate in depth everything presented in this research. Using language portraits and identity texts as group activities helps to conduct a productive discussion in the classroom, through which students gain access to the use of concepts such as “multilingualism”, “multiculturalism”, and “diversity”.