120 - Aina Sahalin - Initiate Apsalus plan (Available MA tech 9), say yes to the first prompt and no to the second event prompt a few turns after. You will get Aina and plans to Apsalus I and II with this selection. continuing the events will give you Apasalus III but you will lose the 08th MS team characters, Aina, Ginias, Norris Packard and I presume Yuri as well.
130 - Marion Welsh (マ リオン・ウェルチ) - Initiate the EXAM plan (Available after you establish Flanagan institute and MS tech 6-7), at the first prompt, immediately say no and shoot the plan down. Rest assure that the funds you used on the plan is not wasted, after a few turns, Marion Welsh will join (a NT pilot!). Continuing the plot will kill her off as she is sacrificed to develop the EXAM system.