Adum Ter Alex was born on the 4th of December 1970 to the family of late Joseph Awuhe Adum Agungu of Jato Daula Village, Mbadyer, Mbabur Council Ward, Gwer Local Government Area of Benue State. He is the 3rd child of his parents and has eight siblings and is happily married to Miriam Adoo Adum-Ter (Nee Akiga-Sai) and the union is blessed with two children Yuadoo Laurel Adum-Ter (daughter) and Kator Jessie Adum-Ter (son).

Adum Ter Alex is a 1998 alumnus of Ahmadu Bello University (ABU), Zaria and has been in active private legal practice since his call to the Nigerian Bar. He also holds a Master of Laws degree from the Benue State University, Makurdi and is a Ph. D candidate of Law ABU Zaria. He cut his teeth in legal practice with the firm of D.D Dodo & Co (SAN) before teaming up with three of his colleagues to form Renaissance Law-Consults in 2001. The attractions of size later propelled him and his colleagues to go into a merger with the then existing firm of Mai & Ayua (Legal Consultants) to form Global Solicitors and Partners, (a firm of legal consultants with presence in Nigeria and the United States), where he is a founding partner and is employee to date. Adum has championed a legal consultancy practice with specialization in Telecommunications and broadcasting law, Intellectual Property law and Banking, Financial Services Regulation and Investment syndication.

Barr. Adum has led teams that provided legal advisory services to several corporate organizations in Nigeria including: Nigerian Communications Commission (NCC); Globacom Telecommunications Limited; Nitel Plc; Mtel Plc; Benue State Government; Megatech Telecommunications Limited; Integrated Communications Ltd; VisaPhone Telecommunications Limited among several other key operators in the Nigerian economy. He also consulted for the Central Bank of Nigeria in crafting the strategy for combating cyber crimes in the Nigeria Financial System (FSS-20-2020 Project).

A widely travelled professional, Adum has attended several local and international conferences on Telecommunications Regulation, Universal Access Provision, investment promotion, wealth creation and poverty reduction using ICT, etc.

He sits on the Board of several companies including Othelo Construction Limited, T.A.L Systems Limited, Andersen Agencies Limited and Dorchester Court Limited.

Barr. Adum has always had more than a passing interest in the affairs of community. As far back as 1989, when he was barely 18, Adum led others of his generation to team up and work assiduously for the Prof. Ignatius Ayua campaign organization traversing the length and breadth of the State. In Zaria, Adum participated actively in Student Union activities and was renowned for his uncommon power of articulation and commitment to issues. He was also a distinguished Senator at the level of the National Association of Nigerian Students (NANS). Adum-Ter founded the Society of International Law at Zaria and nurtured it to become one of the most revered student societies in Zaria even today. He was also a proud winner of the Taslim Elias All Nigerian Universities Moot Court competition. During the Abacha transition programme and while still a student in Zaria, Adum’s adventurous spirit and desire to contribute to nation building propelled him to join forces with political elite such as Wantaregh Paul Unongo, Senator Ameh Ebute and Chief Don Etiebet at the national level in the formation of the National Centre Party (NCP). He was elected the Makurdi Local Government Secretary of the Party, a position he held until the Abacha transition programme was overtaken by events.

On 18 July, 2011, the Executive Governor of Benue State, Rt. Hon. Gabriel Torwua Suswam appointed and swore in Barr. Alex Ter Adum as the Hon. Commissioner for Commerce and Industries and, when the position Attorney-General of the State became vacant, he was sworn in as Hon. Attorney-General of the State and Commissioner for Justice in April 2012.