Perfect Dark Gaia might be the first boss in the Sonic franchise you think of when you hear the word Titan (other than frontiers). I just HAD to combine it with one of the titan themes.
A Mashup of "Undefeatable" from Sonic Frontiers, and "Perfect Dark Gaia" from Sonic Unleashed
Infinite background by LegendQueen01 on DeviantArt
Perfect Dark Gaia photo by Evan Stanley
Giganto photo by HGBD-WolfBeliever5 on DeviantArt