Hikajirou is a famous App Tuber who appears in Digimon Universe Appli Monsters.
- The video Hikajirou uploaded to App Tube, showing him attempting to eat a giant gummy snake is a parody of HIKAKIN's YouTube video titled "I Tried Eating (The World's Largest!?) a Super Enormous Snake Gummy!" (【世界最大！？】超巨大ヘビグミ食べてみた！).
- As a reference to HIKAKIN's signature phrase, "Bun Bun Hello YouTube", Hikajirou opens the video saying "Bun Bun Hello App Tube".