As with the rest of the Yatterman cast, Dokurobei makes an appearance in the Time Bokan: Royal Revival OVAs. He first appears at end of the first episode to congratulate the Dorombo gang for winning the race. He then "rewarded" the trio with a trip to a lava pit in order to train for the next episode.

Dokurobei shows up again in the second episode posing as Togurobei (Toguro is Japanese for coil), sending the Dorombo gang to the Tatsunoko Kingdom to get the Toguro Stone. When all's said and done, he once again punishes the trio since he states it's to be expected by Time Bokan fans. This time he does it by unleashing Matatabinga (Catnip Man in the dub) on them, the character from Dorombo's fake OVA at the beginning of the episode.

Oddly enough, Dokurobei is entirely absent from Heisei Time Bokan, which might explain why the Dorombo gang try a good intentioned "social reform" at first. Even their return to criminal activity in the second story arc isn’t nearly as hectic without a set goal or Dokurobei breathing down their necks.

He makes a brief, voice only cameo at the end of Bokan to Ippatsu: Dorombo, where as usual he punishes the Dorombo gang by firing a missile at them. Due to the low budget this game had, Dokurobei wasn't voiced by his usual VA Junpei Takiguchi.

Dokurobei takes on a more prominent role in it's sequel Bokandesuyo, where on the game's hard difficulty he orders the the Dorombo gang to defeat all the Time Bokan protagonists, with the promise of making the trio the main characters of the next Time Bokan series. He even gifts the Dorombo gang with a vehicle in his likeness (the Dokurobei Car) if they manage to get through the bonus stage.

It's later revealed that Dokurobei's true motive is to take over the Time Bokan series himself and make it "Time Dokurobei", and he promptly casts aside the Dorombo gang. They don't take this lying down, so they stage an assault on his base and fight Dokurobei in a mecha of his own.

Although they managed to win, the trio's humiliated by the Yatterman shortly afterwards, and Dokurobei gets the last laugh by launching a bomb at them from a satellite as "punishment".

In Bokan GoGoGo, Dokurobei commands all the villainous trios from the entire series (barring Kiramekiman) to find and locate a pair of magical tulips. The first group to obtain it will get another chance at the spotlight, hence why it's another race.

In every ending, Dokurobei never gets to obtain the tulips either due to the greediness of the the villainous trios or the heroes arriving to stop them. I'll go into more details surrounding these endings when I write the summaries for these trios as a whole, but here's what happens to Doku-chan in the Dorombo gang's ending: