Yes, Ignite Man.
Ignition Man - lava level
*Looking at the max limit of 6 kana symbols for a Robot Master name*
シープマン (3 + Man) Sheep
コマンドマン (4 + Man) Commando
サイバーマン (4 + Man) Cyber
フェンシングマン (6 + Man) Fencing
イグニッションマン (7 + Man) Ignition
Ignition Man might be the first one to break the limit. ^^
There such thing?
Maybe not. ^^ But so far, there's only been 6 symbols max in all the games.
If we look at English names, Tomahawk is 8 letters, and 5 kana symbols. ^^
Ignite Man would work. Though I think Capcom would use a simpler name for the fire boss. Blaze Man or Lava Man or Volcano Man or etc.
I like the progress so far. Good work everyone~