Starch is cheap and very widely available natural resources that makes an excellent biodegradable plastic product that can be readily manufactured on existing processing with no modification. The aim of this research is to know the potency of mango seed starch and snake plant fibers as bio-plastic fillers and glycerol concentration as plasticizer on tensile strength and elongation at break, density, and heat resistance. The samples prepared have three treatments and a control group containing different measurements of the materials. The citric acid addition improves the shelf-life of the material and improves the mechanical properties. The average thickness of the bio-plastics is 0.001 m. The average heat resistance content is 96.7 áµ?C. Meanwhile, the water uptake is 33.3%. The average density of bio-plastic wass found to be 1.19 g/cm³. The maximum tensile strength of the bioplastics was found to be 1.24 MPa. It was seen that the incorporation of natural fibers show moderate improvement in the tensile properties of the composites. Investigation of the hybridization of proposed starch and snake plant fibers materials with other biomaterials is another scope to consider.