A modular gate combined with multiple functions which can be easily employed with existing tailgates without any hardware or mounting modifications to existing truck beds. There is provided a modular tailgate system having a tailgate portion in combination with a plurality of functions. The modular tailgate system integrates any combinations of at least two of the plurality of features without affecting existing body sides and/or existing truck beds. Integrated features include a multi-functional gate (e.g., swing, drop, etc), storage (e.g., normal, sealed, refrigerated, heated, etc), step(s), lighting (e.g., ingress/egress, bed interior, removable, trailer hitch, parking, etc), bed extension(s), power (e.g., 12 v and/or 110 v), tie downs (e.g., ratchets, anchors, etc), sawhorse, magnet(s), table(s), bench(es), seat(s), net(s), any other predetermined desired function, etc., and combinations thereof.