Ultraman Tiga (ウルトラマンティガ Urutoraman Tiga) is the Ultra that debuted in 1996, and was the first Ultra hero to appear in a full length television series since 1981, ending the 15-year-long hiatus of the Ultraman franchise since the ending of Ultraman 80.
Set in a universe different from all previous series, Ultraman Tiga introduced new and radical updates to the Ultraman character for a new generation of audiences; most notably him being the first Ultraman with multiple combat modes and non-red colors (Purple and Gold). He is also considered one of the most popular entries in the franchise, having had more exposure on TV and in film as compared to other Heisei Ultra heroes (a 52-episode series, five team up films in 1998, 1999, 2008, 2015, 2016, and two direct sequels in 2000 and 2001).
In Power Type (パワータイプ Pawā Taipu), Tiga becomes more red in coloration. This form is called upon when Tiga wishes to exert more physical power, but the cost is speed and agility. It is designed for high power and combat in high pressure environments. In the 4Kids dub, it is also known as "Power Mode". He got his strength from Darramb's power. Its body colors are red and silver.
https://ultra.fandom.com/wiki/Ultraman_Tiga_(character)#Power