Konstantinos was born and raised in Greece, facing one of the greatest economic crisis in recent history, which created a lot of anger and hostility towards young people in Greece. He founded his own website, Teens4Greece, creating an online space for Greek children and young people aged 13-18 years to discuss concerns after the Greek economic crisis. Konstantinos has participated in Eurochild’s Children’s Council, contributing to different activities, including giving input to the development of the Europe Kids Want online survey and meeting with Members of the European Parliament to discuss children’s rights. He spoke on behalf of the Children’s Advisory Team to the DGD as keynote speaker at the UN Human Rights Council at the 70th anniversary of the Universal Declaration on Human Rights. There he took part in a discussion panel with the UN High Commissioner on Human Rights about how the OHCHR can implement child participation effectively.