Q1: If a Digimon card with the X Antibody trait is in this Digimon's digivolution cards, does this Digimon gain Blocker and <Fortitude>?
No, it doesn't.
Lv.4 Leomon (X Antibody) P-139 P Champion | Vaccine | Beastkin/X Antibody [Digivolve] [Leomon]: Cost 0 [On Play] [When Digivolving] 1 of your opponent's Digimon gets -3000 DP for the turn. [All Turns] While this Digimon has [Leomon] or [X Antibody] in its digivolution cards, it gains <Blocker> and <Fortitude>. --- Inherited: [On Deletion] <Recovery +1 ≪Deck≫>. (Place the top card of your deck on top of your security stack.)
Lv.4 Leomon (X Antibody) P-139 P Champion | Vaccine | Beastkin/X Antibody [Digivolve] [Leomon]: Cost 0 [On Play] [When Digivolving] 1 of your opponent's Digimon gets -3000 DP for the turn. [All Turns] While this Digimon has [Leomon] or [X Antibody] in its digivolution cards, it gains <Blocker> and <Fortitude>. --- Inherited: [On Deletion] <Recovery +1 ≪Deck≫>. (Place the top card of your deck on top of your security stack.)
Lv.4 Leomon (X Antibody) P-139 P Champion | Vaccine | Beastkin/X Antibody [Digivolve] [Leomon]: Cost 0 [On Play] [When Digivolving] 1 of your opponent's Digimon gets -3000 DP for the turn. [All Turns] While [Leomon] or [X Antibody] is in this Digimon's digivolution cards, this Digimon gains <Blocker> and <Fortitude>. --- Inherited: [On Deletion] <Recovery +1 (Deck)>.
Lv.4 レオモンX抗体 P-139 P 成熟期 | ワクチン種 | 獣人型/X抗体 「レオモン」:コスト0 【登場時】【進化時】ターン終了まで、相手のデジモン1体をDP-3000。 【お互いのターン】このデジモンの進化元に「レオモン」/「X抗体」がある間、このデジモンは≪ブロッカー≫と≪不屈≫を得る。 --- Inherited: 【消滅時】≪リカバリー+1《デッキ》≫(自分のデッキの上から1枚をセキュリティの上に置く)