Could it be Flint The Time Detective? I've asked similar question in one of my comments, about "Hoom daga, hin daga" opening song and got that show.
Plot: The series is centered around the adventures of Flint
Hammerhead, a boy from the prehistoric era who was resurrected from
his fossil prison and became a Time Detective, although his competency
as a detective is dubious. Much like Inspector Gadget, much of the
heavy thinking is done by Flint's friends Sarah and Tony Goodman who
accompany him on his adventures. Flint, however, pulled his weight in
battle when he would fight with the aid of his father Rocky Hammerhead
whose partial resurrection left him a sentient, talking rock with a
face. Rocky, fashioned into a hammer for Flint, served Flint as both
sturdy weapon and adviser, the latter both in and out of battle.
Flint's job as a Time Detective was to go back in time and convince
time-shifters, cute, collectible creatures to ally with him to protect
Usually, he fought against Petra Fina and her cronies Dino and Mite
(very reminiscent of Marjo, Grocky, and Walther from Time Bokan),
servants of the Dark Lord. The Dark Lord himself sought to use the
time-shifters' powers to invade the Land of Time, the creatures' home
realm from whence he had scattered them. Similar to Pokémon or
Digimon, time-shifters originate as small, cute creatures who can
"shape-shift" into much stronger forms for a time before reverting.
This usually took two forms: an evil form induced by the Dark Lord's
magic (in the form of the Petra Stamp or Uglinator's mark) and a good
one brought forth by Flint and his team.
Source: Wikipedia, Flint The Time Detective