Conjugated polymer design via random terpolymerization with irregular backbones has emerged as a strategy for stretchable organic electronics, requiring diverse molecular architectures to balance charge carrier mobility (μ) and stretchability. In this study, diketopyrrolopyrrole (DPP)-based conjugated polymers with 0%, 5%, and 10% Pechmann dye (PDy) units, denoted as DP-T0, DP-T5, and DP-T10, respectively, are introduced, and explore the impact of PDy on structural mobility and stretchability through experimental and computational analyses. Electrical measurements reveal hole mobilities ranging from 0.01 to 0.08 cm