Following the age-old proverb enemy's enemy is friend, the 64-year-old JD(U) leader whose party won just two of the state's 40 seats in the Lok Sabha poll, a development that impelled him to step down and hand over the reins to Jitan Ram Manjhi, joined hands with Lalu to halt bete noire Narendra Modi's juggernaut in Bihar.
Though Lalu got lucky in his very first outing in the electoral arena, winning Lok Sabha poll in 1977, it took Kumar, an Electrical Engineer from NIT Patna, then known as Bihar College of Engineering, eight more years to get elected to the state assembly for the first time in 1985, after having lost twice.
Though as different as chalk and cheese, Kumar backed Lalu in bagging the chair of the Leader of Opposition in the assembly in 1989 and again when he challenged Ram Sundar Das and Raghunath Jha, nominees of Prime Minister V P Singh and Chandra Shekhar respectively, for the chief minister's post after Janata Dal came to power in Bihar in 1990.
Suave and articulate, Kumar again became Railway Minister in 2001 and continued till 2004 during which period he was credited with introducing several reforms in the public sector behemoth like internet ticket booking and Tatkal system of instant booking. The Godhra train burning incident in February 2002, which provided the spark that soon consumed Gujarat in communal flames, occurred during his tenure at Rail Bhavan.