Since there discovery, black holes have tantalized scientists and the public alike. To further this research, we are working to develop several future X-ray telescopes to be launched by NASA and our international partners, ESA and JAXA. My group is particularly involved in the XRISM Observatory, a joint NASA and JAXA mission to be launched in early 2022. I am a NASA Participating Scientist and the co-chair of the supermassive black hole working group. I am also a Co-Investigator of the AXIS Probe Mission Concept, and a Steering Committee Member of the STROBE-X Probe Mission Concept, both of which are currently under consideration by the Astro2020 Decadal Survey.