This article introduces a novel strategy to enhance the toughness of hydrogels using fibrillar connected double networks (fc-DN). The fc-DN consists of two distinct but chemically interconnected polymer networks: a polyacrylamide (PAAm) network and an acrylated agarose fibril network. This design allows for efficient stress transfer between the two networks and high fibril alignment during deformation, contributing to high strength and toughness while maintaining low plastic deformations. The mechanical properties of the fc-DN network can be tuned to achieve ultimate tensile strengths of 8 MPa and toughness of over 55 MJ m−3, significantly outperforming conventional fibrillar double network (f-DN) hydrogels. The fc-DN hydrogel's superior performance is demonstrated through its application as a load-bearing damping material for a jointed robotic lander, showcasing its potential in soft robotics and bioelectronic applications. The study also provides insights into the toughening mechanisms, including the role of internetwork chemical crosslinks and the alignment of agarose fibrils, which enhance interfacial strength and stress transfer.This article introduces a novel strategy to enhance the toughness of hydrogels using fibrillar connected double networks (fc-DN). The fc-DN consists of two distinct but chemically interconnected polymer networks: a polyacrylamide (PAAm) network and an acrylated agarose fibril network. This design allows for efficient stress transfer between the two networks and high fibril alignment during deformation, contributing to high strength and toughness while maintaining low plastic deformations. The mechanical properties of the fc-DN network can be tuned to achieve ultimate tensile strengths of 8 MPa and toughness of over 55 MJ m−3, significantly outperforming conventional fibrillar double network (f-DN) hydrogels. The fc-DN hydrogel's superior performance is demonstrated through its application as a load-bearing damping material for a jointed robotic lander, showcasing its potential in soft robotics and bioelectronic applications. The study also provides insights into the toughening mechanisms, including the role of internetwork chemical crosslinks and the alignment of agarose fibrils, which enhance interfacial strength and stress transfer.