In sumo, who is this rikishi called Bulldozer or Mountain?
What an interesting question, but it is so general that I would give various answers. Maybe, I would hit the question with many answers. The first rikishi that I known to be called Bulldozer is no other than the big boy Konishiki who was known as the Dump Truck or the monicker Bulldozer. Konishiki Yasokichi Personal information Birth name Salevaa Atisanoe Date of birth December 31, 1963 (1963-12-31) (age 45) Place of birth Oahu, Hawaii Height 1.87 m (6 ft 1+1?2 in) Weight 264 kg (580 lb; 41.6 st) Career* Heya Takasago Record 733–498–95 Debut July, 1982 Highest rank Ozeki (July, 1987) Retired November, 1997 Yusho 3 (Makuuchi) 2 (Juryo) 1 (Jonidan) 1 (Jonokuchi) Special Prizes Outstanding Performance (4) Fighting Spirit (5) Technique (1) Gold stars 2 (Chiyonofuji, Takanosato) Now, he could also be called the Mountain because of his humongous bulk at 580 lbs. He is now retired. In the current basho, we have also a rikishi or wrestler who is called the Bulldozer and a Mountain. He is Yamamotoyama Ryuta. Yamamotoyama Ryūta Personal information Birth name Yamamoto Ryūichi Date of birth May 8, 1984 (1984-05-08) (age 24) Place of birth Saitama, Japan Height 1.91 m (6 ft 3 in) Weight 248 kg (550 lb; 39.1 st) Career* Heya Onoe Current rank Maegashira 13 Debut January 2007 Highest rank Maegashira 13 In fact, the name Yamamotoyama is jokingly called Two Mountains since yama in Japanese means mountain, and there are two yamas in the name. If you notice, he weighs around 550 lbs., so Konishiki is heavier by about 30 lbs. So, my answer is: If you are referring to a foreign born rikishi, then he is Konishiki. But if you are referring to a native rikishi, then he is Yamamotoyama, the Two Mountains. Good luck to you.
